Hitting the Target: Accuracy vs. Precision

Using Jono’s sketch of four archery targets, we discuss why and how accuracy and precision differ.Using many different examples, we frame the distinction as “accuracy being true to intention and precision being true to itself,” also phrased as doing the right thing versus doing it right.The sketch is inspired by Simon Winchester's book, Exactly, where precision and accuracy are connected to the industrial revolution via Henry Maudsley’s innovative screw-cutting lathe, micrometer, and the concept of interchangeable parts. The conversation broadens to explore examples in food (McDonald’s vs artisan meals), recipes, recruiting, IQ tests (validity vs reliability), indoctrinated beliefs, gut feelings, culture’s return to individual craftsmanship, AI’s variable answers, LED mask wavelength tolerances, and targeting weapons.External linksAlso referenced in this episode:Jono's sketch that describes the difference between Reliability and Validity.Jono's sketch inspired by Roger Martin's Knowledge Funnel.Jono's sketch outlining The Beard Cycle.Episode Outline00:00 Accuracy vs Precision: the Four Target Sketch03:23 True to Intention04:11 Ball Through Window05:44 Precision Built World09:45 Food and Recipes13:27 Calibration and Scales14:47 Manufacturing Tolerances16:51 Hiring and Testing19:16 Beliefs and Education23:01 Culture and Craft26:09 Doctors Robots and AI29:03 Wrap Up and CreditsAll music on this podcast series is provided by the very talented Franc Cinelli and you can find more tracks at franccinelli.com Hosted on Acast. See acast.com/privacy for more information.

If you like the finer details of grammar and punctuation, then you're gonna love this episode.We geek out on the subtle, but incredibly important and occasionally crucial differences between three little horizontal lines: the hyphen - the En Dash – and the Em Dash —Jono explains hyphens for line breaks and compound terms, how usage can evolve into single words (e.g., wildlife, wellbeing), and why hyphen placement can change meaning (e.g., five-dollar bills). The en dash is described as linking ranges and relationships (pages, dates, times, scores, routes, debates, partnerships, negotiations), with notes on how to type it. The em dash is framed as a stronger-than-comma interruption for added thoughts, with style cautions and typing methods. They discuss underscore origins from typewriters, punctuation differences across countries, and how AI popularized em dashes as a telltale sign of machine-written text.Most importantly though, we discuss why this matters and that if used correctly, they can help avoid misunderstandings.Episode Summary00:00 Welcome to Sketchplanations00:40 What Are Dashes03:09 Hyphen Basics04:32 Hyphenated Words05:35 Language Evolves07:00 Hyphen Pitfalls07:31 Tom on Hyphens10:38 Meet the En Dash11:41 Typing En Dashes12:32 En Dash Use Cases14:47 Spacing and Style15:30 Introducing Em Dash15:33 Em Dash Basics16:15 Style Guide Rules18:08 Brackets vs Speech18:57 Where Names Come From20:32 Underscore Origins22:05 Reading Dashes Aloud24:39 Does It Matter26:04 Oxford Comma Stakes28:36 AI Em Dash Tell29:59 Typing Em Dashes30:32 Punctuation By Country31:41 Morse Code And Minus32:43 Final Sign OffExternal LinkThere's only one link this week:Jono referenced the book Strunk and White : The Elements of StyleAll music on this podcast is provided by the very talented Franc Cinelli. Hosted on Acast. See acast.com/privacy for more information.

Have you ever wondered what's happening on the exact opposite side of the world to you?Wherever you are on our planet, there's a good chance you'd need a snorkel.In this episode, we explore the concept of antipodes—the exact point on the opposite side of Earth from wherever you're standing. We discover why most antipodes end up in the ocean rather than on land and cover a whole host of fascinating geographic facts, including how the Northern Hemisphere contains the vast majority of Earth's land and population, how map projections distort our view of the planet, and why Earth's oblate spheroid shape means some antipode distances are longer than others.Along the way, we also raise the big questions like how deep have humans ever dug into Earth and how long it would take to fall through a frictionless tunnel to your antipode.External Links and mentions on the show:Jono's sketch that explains the Mercator Map Projection Jono references the Antipodal Map in the book Marvellous Maps by  Simon KuestenmacherThe 7.6 mile deep hole Jono talks about is the Kola Superdeep Borehole in Russia, initiated by Soviet scientists in 1970, primarily to better understand the earth’s crust. Here's Jono's sketch about the thickness of the earth's crust being proportionally similar to the thickness of an apple's skin. And finally, if you want to know your exact antipode, you can look here on AntipodeMap.comEpisode Summary00:00 What Are Antipodes03:23 Land Distribution on Earth04:14 Map Projections and Perspectives07:19 Antipodal Map Overlay08:56 Cultural References Worldwide10:15 Etymology of Antipode10:41 Digging Through Earth12:44 UK Antipodes13:29 Great Circle Routes14:20 Earth's Oblate Shape15:25 Tunnel Through Earth16:34 Closing RemarksAll music on this podcast series is provided by the very talented Franc Cinelli Hosted on Acast. See acast.com/privacy for more information.

When you want to measure something you take your ruler or tape measure and read off the length right?But when it comes to measuring the length of a coastline, things get a bit tricky and totally counter intuitive. 🌊The science and maths of measuring wiggly coastlines reveal that the smaller the unit of measure, the longer the coastline becomes. Jono recounts the origins of this phenomenon from polymath, Lewis Fry Richardson and its further exploration by Benoit B. Mandelbrot. The trio also relate the concept to various other real-world examples, including the surfaces of the brain and lungs, Romanesco cauliflower, and stock market patterns. Additionally, they touch on the philosophical implications of measurement and delve into the concept of infinity.Episode Summary:00:00 Introduction the Coastline Paradox04:12 Historical Context and Discovery14:10 Fractals and Natural World Applications17:26 Modern Implications and Analogies24:36 Conclusion and Final ThoughtsExternal Links and mentions on the show:Jono refers to and leans heavily on the writing of Geoffrey West in his book "Scale" to tell the story of how this was discovered.Rob's half-baked fact about The Standardised Meter can be expanded on here.This is what the self-similarity of a Romanesco Cauliflower looks likeHere is the avenue of trees in Bushy Park, in Southwest London that Jono slalomed.Here are more facts on who originally defined the number 'zero' as we know it today.All music on this podcast series is provided by the very talented Franc Cinelli Hosted on Acast. See acast.com/privacy for more information.

Have you ever wondered what the colours on the Olympic flag represent?The Olympic logo is a globally recognised brand and remarkably, it was designed over 100 years ago by the founder of the modern Olympic Games, Pierre de Coubertin.This time, we discuss the history and symbolism of this design icon ahead of the Winter Olympic Games in Milano Cortina, Italy. We find out about its representation of unity among the five (?) continents (one for each ring), and the careful selection of the flag's colours. The episode also delves into fascinating Olympic trivia, including the evolution of the games, historical moments, and the development of the Olympic motto. Rob also shares insights from filming at the Olympic Museum in Lausanne, Switzerland, for his series 'The Vault,' which explores Olympic history through artefacts found in their archives.You can watch all 10 episodes of The Vault for free here on the Olympics Channel.Episode Summary00:00 Introduction and Excitement for the Winter Olympics01:42 The Genesis of the Olympic Flag02:50 Symbolism and Design of the Olympic Flag05:06 Pierre de Coubertin: The Visionary Behind the Olympics05:21 Exploring Olympic History and Artifacts09:35 Evolution of the Olympic Games and Flag22:28 Conclusion and FarewellAll music on this podcast series is by the very talented Franc Cinelli. Hosted on Acast. See acast.com/privacy for more information.

How big is that pile of books next to your bed?Tsundoku is a Japanese word for buying books and letting them pile up unread. It’s a familiar habit to book lovers everywhere — that growing stack of books you intend to read but haven’t yet. In this episode of Sketchplanations The Podcast, we explore why we buy books we don’t read, why unread books don’t always feel like a bad thing, and what this habit says about curiosity, identity, and our relationship with reading.In this episode we embrace Tsundoku and our conversation ranges from buying too many books to the joy and guilt of collecting unread books, and how tsundoku can extend to audiobooks, hobbies, and other unread things. If you’ve ever wondered why you buy books faster than you can read them — or felt conflicted about your own unread pile — this episode is for you.Links to items (mainly books) that we discussed:The book that changed Tom's life: Rocket Fuel by Gino Wickman and Mark WintersThe book from Jono's pile he next wants to start: A few short sentences about writing by Verlyn KlinkenborgRobbie is most looking forward to getting started on: Whatever will be will be by Felix WhiteJono recommends cartoons about books and reading by Tom GauldBig Ideas, Little Pictures is the Sketchplanations book by Jono HeySummary: 00:00 Introduction to Tsundoku: The Act of Collecting Unread Books02:52 Personal Stories and Reflections on Tsundoku05:20 The Broader Implications of Tsundoku07:49 Books as Gifts and Their Value10:03 The Joy and Guilt of Collecting Books17:14 Final Thoughts and Reflections19:34 Conclusion and FarewellAll music on this podcast series is by the very talented Franc Cinelli Hosted on Acast. See acast.com/privacy for more information.

Do you know who your second cousins are or if you even have any? And what does "once removed" mean anyway?Tune in to this episode as we unravel the mysteries of family relations—which we figured would be particularly helpful at the festive time of year.We explore the subtleties of family trees, making our way to 'Second Cousins Once Removed'. We dig into the confusion around generational terms and the importance of knowing your extended family. We share a few family-related anecdotes and cultural differences, such as the Chinese family tree and Icelandic naming conventions. We strongly encourage you to follow along with the sketch at Sketchplanations.com to better understand your own family connections.Here are the Chinese family tree names mentioned.Episode Summary 00:00 Welcome to Sketchplanations00:47 Understanding Family Relations02:13 Exploring Second Cousins06:06 Generational Differences Explained11:48 Cultural Perspectives on Family Trees14:57 Famous Families and Their Connections15:08 The Mayflower Ancestor Story15:55 Family Trees and Their Complexity16:43 The Importance of Family Connections18:01 Tracing Family History21:07 Unique Family Names and Their Origins22:28 Surname Origins and Commonality25:58 Gender-Neutral Family Terms27:07 Concluding ThoughtsAll music on this podcast series is provided by the very talented Franc Cinelli Hosted on Acast. See acast.com/privacy for more information.

Coined in the 1990s by Linda Stone, Continuous Partial Attention describes the state of being constantly connected; trying to do multiple things at once, which often leads to an ever-present, low-level form of stress. We explore how this phenomenon affects modern life, compare it to multitasking, and discuss both its positive and negative aspects. The podcast also highlights how technology has exacerbated this issue and considers potential solutions, such as mindfulness and turning off notifications, to better manage one's attention.Links to stuff we discussed:Dan KahnemanMind Over TechVideo of Woman who Walks into Fountain Whilst TextingThe Film: Her, starring Joaquin Phoenix.Other Sketches and podcast episodes referenced:Phubbing episode and sketchPhone Zombie sketchHegel's Dialectic: Thesis, Antithesis, Synthesis sketchYak Shaving episode and sketch5 Ways to Wellbeing episode and sketchEveryone's a Geek About Something episode and sketchHow to Instantly Feel Better episode and sketchPicking the Perfect Present episode and sketchBuy Jono's Book: Big Ideas, Little Pictures, for a loved one this Christmas - The Perfect Present and then some...Summary00:00 Introduction to Continuous Partial Attention01:31 Depicting Continuous Partial Attention in a Sketch04:25 Personal Experiences with Continuous Partial Attention05:54 The Impact of Technology on Attention08:49 Multitasking vs. Continuous Partial Attention11:15 The Challenge of Staying Focused17:05 The Role of Continuous Partial Attention in Different Professions20:38 The Dilemma of Turning Off Notifications21:15 Balancing Work and Family Life22:03 The Art of Multitasking22:59 The Pitfalls of Continuous Partial Attention23:49 Turning Cognition into Automation25:25 The Rise of Single Tasking27:54 The Productivity of Focused Work32:07 The Future of AI and Continuous Partial Attention34:20 Final Thoughts and RecommendationsAll music on this podcast is provided by the very talented Franc Cinelli. Hosted on Acast. See acast.com/privacy for more information.

What's your life expectancy trade-off for enjoying a crispy bacon sandwich? 🥓Sir David Spiegelhalter is a celebrated Professor of Statistics at the University of Cambridge; widely accepted as one of the UK's foremost statisticians. He explains the concepts of 'micromorts' and 'microlives', which quantify risk and the impact of lifestyle choices on life expectancy. The discussion delves into acute vs. chronic risks, with practical examples such as the dangers of skydiving or how regular smoking affects longevity of life. The conversation also covers the application of statistics in medicine, the importance of randomisation in clinical trials, and the philosophical underpinnings of uncertainty. Additionally, David highlights the human capacity to judge risks, the pitfalls of intuition, and offers practical advice on dealing with uncertainty in everyday life. Lively anecdotes, insightful explanations, and practical takeaways make this episode a compelling listen for anyone interested in the intersection of statistics, risk, and daily decision-making.David's latest book, The Art of Uncertainty is available in all good bookshops and online.Here are some useful links to further explore some topics raised:The work of Ron Howard at Stanford UniversityJono's sketch on Word SpectrumsDavid's many other books - including Sex by NumbersPoisson Distribution explainedDavid tells the tale of Persi Diaconis - the Mathemagician.Episode Summary:00:00 Introduction, David's Background & Achievements01:43 The Wipeout Experience03:13 Understanding Micro-Morts04:27 Acute vs. Chronic Risks05:29 Micro-Morts in Everyday Activities12:05 Introduction to Micro-Lives18:03 Medical Applications of Data and Statistics21:27 The Role of Uncertainty in Life27:52 Building Resilience Over Robustness29:18 Embracing Uncertainty in Life33:35 Misuse of Statistics in Media and Politics40:30 The Gamblers Fallacy and Intuition42:29 The Uniqueness of Card Shuffles45:43 Common Misconceptions About Probability48:02 Practical Tips for Dealing with Uncertainty51:33 Final Thoughts and ReflectionsAll music is provided by Franc Cinelli. Hosted on Acast. See acast.com/privacy for more information.

This genius time management hack was conceived by Francesco Cirillo. The technique involves working for 25 minutes followed by a mandatory 5-minute break, repeating this cycle three to four times before taking a longer break. We share our personal attempts at using the method, explore the psychology behind productive work cycles, the importance of taking breaks and reflect on its effectiveness in both office and home environments. We also discuss the broader context of productivity obsession and share insights from using related tools eg. online "focus buddies". The session concludes with a follow-up on how the Pomodoro Technique has worked for them a week after recording the episode, reenforcing a lot of the theory we originally set out. Could this be our favourite procrastination buster yet!?!External linksIn the episode we reference a number of items you can find out more on here: Previous podcast episodes came up a lot (procrastination is a recurring theme for us): How to Instantly Feel Better; Yak Shaving; Goldilocks Tasks & The Fresh Start EffectRemarkably, there's currently no sketch for it, but Jono talks about The Red Queen Effect or Hypothesis - the concept of having to run to stay still.The Bear Focus Timer (used by Jono and now Tom as well). Available on Apple Store Examples of Focus Buddy or Accountability Partner websites include Focus Mate and Flow Club.Episode Summary00:00 Introduction to Sketchplanations Podcast00:29 Exploring the Pomodoro Technique01:03 Origins and Basics of the Pomodoro Technique02:57 Implementing the Pomodoro Technique in the Office07:23 Challenges and Adaptations of the Pomodoro Technique17:10 Alternative Productivity Methods18:53 Accountability and Shame in Productivity19:40 Origins of the Pomodoro Technique20:17 Applying Pomodoro in Different Environments21:32 Psychological Benefits of Time Blocking22:38 Challenges and Adaptations in the Office23:01 Personal Admin and Procrastination23:22 Flow and Creative Tasks26:16 Post-pod Findings on Pomodoro Technique Usage28:44 Final Thoughts and OutroAll music on this podcast series is kindly provided by the very talented Franc Cinelli. Hosted on Acast. See acast.com/privacy for more information.