On Wednesday, 31 July 2013 at 23:26:32 UTC, Walter Bright wrote:

On 7/31/2013 3:58 PM, John Colvin wrote:It's a quite impressively unbalanced education that providesunderstanding ofmemory allocation strategies, hashing and the performancepitfalls of integerdivision, but not something as basic as a speed.Have you ever seen those cards that some "electrical engineers"carry around, with the following equations on them:V = I * R R = V / I I = V / R ?I found it:https://docs.google.com/drawings/d/1StlhTYjiUEljnfVtFjP1BXLbixO30DIkbw-DpaYJoA0/edit?hl=en&pli=1Unbelievable. The author of it writes:"I'm going to explain to you how to use this cheat sheet incase you've never seen this before."http://blog.ricardoarturocabral.com/2010/07/electronic-electrical-cheat-sheets.html Makes you want to cry.

`Something I discovered during my studies when helping other is`

`that most people to not even try to understand this kind of`

`stuff. They simply brute-force the equation to their memory and`

`regurgitate it as needed without understanding anything. Not`

`because their aren't capable of understanding, simply because`

`they never figured out that equation actually are saying`

`something (and the teaching style often do not help here). They`

`do not relate the equation to actual phenomenon they observe.`

`A nice example is the very basic mass times acceleration equals`

`force.`

`Granted that acceleration is the variation of speed, this`

`equation means the following :`

- If you push something it will start to move. - If you continue pushing it will move faster and faster.

`- If you do not push, it won't move (or continue moving the way`

`it was).`

- The heavier it is, the harder it is to move that something.

`Any child knows all the above, it is experienced it in everyday`

`life. And the equation is simply the mathematical notation of`

`this very basic experience.`

`If you don't relate such equation to anything real, you'll have`

`all kind of trouble remembering it, knowing when to use it or how`

`to use it.`