Sketchplanations - A weekly explanation in a sketch

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Explaining the world one sketch at a time

Fitts’ Law

The time to a target depends on the ratio of distance to the target over it’s size. So clicking on a small target close by might take a similar time to clicking on a large target further away. It’s a simple model and there are a few little games out there to bring it home in practice. I’m reminded however, of an observation from a mentor of mine, Darrell Mann, that just because people call it a law doesn’t mean you have to treat it like one. The example of Apple’s standard program icons at the base of the screen that expand when you mouse near them, are a simple technique that help to overcome the limitations of Fitt’s law. There are plenty more. Don’t be sucked in to laziness by a name.…The time to a target depends on the ratio of distance to the target over it’s size. So clicking on a small target close by might take a similar time to clicking on a large target further away. It’s a simple model and there are a few little games out there to bring it home in practice. I’m reminded however, of an observation from a mentor of mine, Darrell Mann, that just because people call it a law doesn’t mean you have to treat it like one. The example of Apple’s standard program icons at the base of the screen that expand when you mouse near them, are a simple technique that help to overcome the limitations of Fitt’s law. There are plenty more. Don’t be sucked in to laziness by a name.

5 Aug 2015

How to tell a centipede from a millipede

A centipede has 1 pair of legs on each body ring, and a millipede has two on most body segments. Hence millipedes will generally have plenty more legs to go round. As far as I know this is fairly foolproof. Though generally speaking there are more obvious ways to tell, such as millipedes looking more like long armoured nice round worms and usually moving slowly, and centipedes zipping around while generally seeming more long-legged and insecty, with longer antennae at the front and longer angled back legs, sometimes with hooks for defence. If you were offered to pick one of them up, you’d probably pick the millipede. Also, in case you were tempted to think they are insects, they’re not because insects have six legs. They are arthropods (loosely meaning jointed feet) along with insects, spiders, scorpions and crustaceans, but in their own subphylum of, aptly named, myriapoda (loosely meaning many legs). Check out core insect anatomy for a sketchplanation insect refresher.…A centipede has 1 pair of legs on each body ring, and a millipede has two on most body segments. Hence millipedes will generally have plenty more legs to go round. As far as I know this is fairly foolproof. Though generally speaking there are more obvious ways to tell, such as millipedes looking more like long armoured nice round worms and usually moving slowly, and centipedes zipping around while generally seeming more long-legged and insecty, with longer antennae at the front and longer angled back legs, sometimes with hooks for defence. If you were offered to pick one of them up, you’d probably pick the millipede. Also, in case you were tempted to think they are insects, they’re not because insects have six legs. They are arthropods (loosely meaning jointed feet) along with insects, spiders, scorpions and crustaceans, but in their own subphylum of, aptly named, myriapoda (loosely meaning many legs). Check out core insect anatomy for a sketchplanation insect refresher.

29 Jul 2015

Everything is aiming

In his post on Zanshin, a state of relaxed alertness, James Clear writes: Great archery masters often teach that “everything is aiming.” Where you place your feet, how you hold the bow, the way you breathe during the release of the arrow—it all determines the end result. I like the idea of zanshin, but I like more the insight that everything is aiming. How every piece of your attitude, preparation, body and state go towards influencing how you perform. No detail too small. Tennis coaches, for example, reinforce being in the ready position before a ball even comes your way. Experience teaches you it does matter. The concept reminds me of one of my favourite quotes which I think pretty much sums up a great approach to life as a whole and also how I view luck: I will study and get ready, and perhaps my chance will come. —Abraham Lincoln…In his post on Zanshin, a state of relaxed alertness, James Clear writes: Great archery masters often teach that “everything is aiming.” Where you place your feet, how you hold the bow, the way you breathe during the release of the arrow—it all determines the end result. I like the idea of zanshin, but I like more the insight that everything is aiming. How every piece of your attitude, preparation, body and state go towards influencing how you perform. No detail too small. Tennis coaches, for example, reinforce being in the ready position before a ball even comes your way. Experience teaches you it does matter. The concept reminds me of one of my favourite quotes which I think pretty much sums up a great approach to life as a whole and also how I view luck: I will study and get ready, and perhaps my chance will come. —Abraham Lincoln

22 Jul 2015

Cream tea: Cornwall vs Devon

There’s stiff competition for the original and the most authentic British cream teas between Devon and Cornwall and the Southwest of England. And you may have, like me, wondered if when having scones with clotted cream and jam in what order should you put them. However, you can tell each apart by the preference on your scone to go for jam on top of the clotted cream, or under the cream. Cream on top = Cornwall. Jam on top = Devon. If you haven’t had one on location, I recommend you give it a try.…There’s stiff competition for the original and the most authentic British cream teas between Devon and Cornwall and the Southwest of England. And you may have, like me, wondered if when having scones with clotted cream and jam in what order should you put them. However, you can tell each apart by the preference on your scone to go for jam on top of the clotted cream, or under the cream. Cream on top = Cornwall. Jam on top = Devon. If you haven’t had one on location, I recommend you give it a try.

15 Jul 2015

The Fifth Fuel: energy efficiency

The fifth fuel is energy efficiency—the cheapest of all. Also see: Jevons paradox Heating people, heating spaces…

9 Jul 2015

A back sleeper lying on 1 pillow, and a side sleeper enjoying 2 pillows

Back sleepers, side sleepers

This may have been obvious from day one, but despite the basic geometry of our necks it took me many years to figure out that back sleepers generally need just the one pillow and side sleepers are better off with two. Still think the pillow industry could do with a shake up though to solve basic problems like not falling into the gap between pillows, pillows made for two or pillows that more flexibly adjust as you turn over.…This may have been obvious from day one, but despite the basic geometry of our necks it took me many years to figure out that back sleepers generally need just the one pillow and side sleepers are better off with two. Still think the pillow industry could do with a shake up though to solve basic problems like not falling into the gap between pillows, pillows made for two or pillows that more flexibly adjust as you turn over.

1 Jul 2015

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