Sketchplanations
Big Ideas Little Pictures

Sketchplanations in a book! I think you'll love Big Ideas Little Pictures

Sketchplanations podcast photo of Rob Bell, Tom Pellereau and Jono Hey

Prefer to listen?
Try the podcast

Like Sketchplanations?
Support me on Patreon

Explaining the world one sketch at a time

Sketchplanations makes complex ideas simple with clear, insightful sketches. Explore topics from science, creativity, psychology, and beyond explained in pictures.

New sketches by email

Learn something new in a sketch each Sunday

Recent sketches

What is phubbing - snubbing someone or ignoring them for your phone - example: Someone sat in a cafe being phubbed by their friends on their phones while a parent and child walks by, gently heartbroken by being upstaged by a phone

Phubbing

Phubbing is snubbing people for your phone. We've probably all experienced it—heck, we've probably all done it at one point or another—or at least it's likely familiar. It could involve someone in a restaurant waiting for their friends to put their phones down, a family gathering where people are no longer talking to each other, a teacher without the attention of their students, or a child failing to get the attention of an adult who's trying to process some messages on their phone. Research on phubbing, mostly since the word was coined, says it largely has the effects you'd think it would. The effects vary with who's being phubbed and who's doing the phubbing: bosses and employees, family members, parents and kids, or partners. Whoever's phubbing who, snubbing is a suitable root word for it — it's not so nice to feel snubbed. I learned about phubbing from the Mind over Tech community, which also publishes a newsletter on forming better digital habits. The word phubbing has the unusual distinction of being created for an advertising campaign to sell a dictionary. See, for example, Knausenberger, J. et al. (2022). Feeling Ostracized by Others’ Smartphone Use: The Effect of Phubbing on Fundamental Needs, Mood, and Trust. Frontiers in Psychology, 13. https://doi.org/10.3389/fpsyg.2022.883901 Related Ideas to Phubbing Also see: For more phone annoyance, see Halfalogue. Phone zombie Continuous partial attention When drinking tea Phubbing, you may have spotted, is a portmanteau
Read more…
A circle with a number of its mathematical parts labelled. And someone trying to climb up the tangent.

Parts of a circle

A recap of some of the fundamental parts of a circle, including some that are easy to forget: Diameter — a line crossing the circle through its centre. Also the longest straight line you can draw in a circle. Radius — a line from the centre to any point on the edge. Also, half the diameter. Sector — the classic Trivial Pursuit cheese, pizza or cake slice formed by two radii. Area — equal to pi x the radius squared. Circumference — equal to pi x the diameter. Arc — a section of the circumference. Chord — a straight line touching any two points of a circle. The longest chord is the diameter. Segment — the areas on either side of a chord, major and minor. Tangent — a straight line just touching the edge of the circle without crossing it. It forms a right angle to the radius on the edge. Just as if you were able to lean a ladder against one. More maths and science refreshers: States of matter, BODMAS (or PEMDAS), the 9 times table on your fingers, binary, incidence and reflection
Read more…
Sharpen the saw from Stephen Covey illustration: A woodcutter explains that they have no time to stop and sharpen the saw as they have so many trees to cut

Sharpen the saw

Sharpen the saw is a metaphor and story to remind us to refresh and recharge ourselves. When you're deep in, it may feel like you have no time to pause. No time to take a break, there's too much to get done. Perhaps no time to stop and think about how you're working. No time to step back and improve your processes or work on your tools. Maybe even no time to look after yourself, to recharge, to reflect, to take a walk. As the metaphor goes, you may feel you have no time to stop and sharpen the saw. Until you do it, and then you may realise you have no time to not stop and sharpen the saw. Sharpen the saw is habit 7 of Stephen Covey's classic The 7 Habits of Highly Effective People
Read more…
Peeling away the intent and subtlety behind what seems a simple metric. Next to an onion.

The metrics onion

Metrics are like an onion: full of layers. A simple question to ask can often be complicated to answer. Or we may find that we need to ask a different question. While it'd be lovely to have one simple metric to understand our business the reality is usually a lot more nuanced and interesting than it first seems. Averages will deceive. Vanity metrics may wow —  by, say, quoting a total user count and conveniently ignoring whether those users are actually paid, active, or leaving. Growth overall can hide declines in other areas or product lines and vice versa. The people on monthly subscriptions may be doing great, while revenue from add-ons may be declining. New users may be signing up in droves while existing users are churning. Mobile traffic may be different from desktop, online sales different from store sales... In practice, it's the hard questions we're usually asking even if we don't know how to ask them. It pays to carefully consider what you're trying to learn and to understand all aspects of a business before putting faith in the numbers. And it may make sense to start with simpler metrics first. Spend time with your data.
Read more…
The bus factor summary - A poor soul squashed by a bus lamented because they were the only one who knew the password

Bus factor

The bus factor is how exposed you are if key people, perhaps with critical knowledge or skills, were hit by a bus. Examples might include the only people able to keep a company running, restore a server from a backup, or someone who held the only key to unlock crypto assets of its customers. As a result, many places are set up with, or required to have by investors or insurers, some redundancy — say two experienced developers with knowledge of how a service works — to minimise the risk of a tragic accident also being a severe problem for a company or its customers. As a metaphor, the bus factor may be helpful to consider without the need for people to actually be hit by a bus. It may be worth thinking through how you might operate if someone was late, missed their flight, was ill on the day, or simply quit. In operational roles, this will often lead to a minimum of two people for each key position if nothing else to allow one to take a break from time to time. An alternative framing, with fewer fatalities, is 'what if we all won the lottery?' and so decided to go do something else.
Read more…
Ma sketch: a kayaker glides through a calm lake with a shoreline reflection on a moody grey day

Ma

Ma is the negative space — the space that makes the whole. Formed by the rather beautiful Chinese characters of 'Door' and 'Sun', like the sun gleaming through a doorway, it represents what isn't there and how that helps form what is. Ma is present in art, including beautiful minimalistic ink brush drawings and music where the silence and quiet that surround the notes help make a piece what it is. Some vintage-related sketches: figure and ground, use white space with care, John Cage Original ma sketch (without kayaker)
Read more…
Buy Me A Coffee