Get the Powers to Act from Fresh Ideas



June 13, 2013

Writing Clearly - Crashing into Mars

I want to write a lot about software and software business. And I have to restrain myself to stick to my target audience, you : young students and  your parents. This post is about software but you will find it easy to understand and useful to your study.

Writing clearly is very important. How important? Not doing so can crash expensive space crafts, like the crash of Mars Climate Orbiter in September 1999. That just cost NASA US$ 125 million.

I got this example from Streetlights and Shadows: Searching for the Keys to Adaptive Decision Making. It's a wonderful book, full of inspiring examples for young scientists, students and entrepreneurs.

What the Crash Had to do with Clear Writing?


Mars Climate Orbiter's software mixed up between English units and metric units, between feet and meters.

Kindergarten mistakes?

Not so fast.

The authors of that software borrowed some pieces from the software of a previous mission called Mars Global Surveyor. The part that caused the problem is called "the thruster equation", which does conversion between feet and meters. That must be a very simple, clear, short piece. What so special about conversion between feet and meters after all?

Pieces of software are just like paragraphs in a long story.

If you write clearly, they read like paragraphs in a good story. You know what each means, which parts of the story are where and so on.

If you are careless, undisciplined or irresponsible, any reader will trip, slip and fall among your lines and paragraphs.

And your software may down a plane, shut down a bank and a hospital, or even crash some space missions.

So, why not start a good habit now. Let's write a bit more clearly starting from today!


Mars Global Surveyor with s a bit messy software.



Mars Climate Orbiter that crashed into mars.

June 2, 2013

Math Education for Real

How do you want your kids to learn Math? I don't have a formal education in Math. And if you don't too, these books can help you. At least, you will be able to teach your kids to relax. Just a few minutes for each difficult book!

Work hard, intensely, compulsively, obsessively and of course, productively and insanely?

Work in balance, work having a life and productively too?

You have a choice, your kids too have a choice.

Perfect Rigor: A Genius and the Mathematical Breakthrough of the Century



A Strange Wilderness: The Lives of the Great Mathematicians




Henri Poincaré: A Scientific Biography



Surely You're Joking, Mr. Feynman! (Adventures of a Curious Character)



How to Solve It: A New Aspect of Mathematical Method (Princeton Science Library)



George Ploya book pdf