I'm not a sculptor; I'm a hard-edged model maker. You give me a drawing, you give me a prop to replicate, you give me a crane, scaffolding, parts from 'Star Wars' - especially parts from 'Star Wars' - I can do this stuff all day long. It's exactly how I made my living for 15 years.

In theory, cars are fairly simple. If they don't start, it's either the fuel system or the electrical system. Teach yourself about the path of each in your engine and tracing it is fairly straightforward. But at the beginning, mastering each new system seems like an unreachable shore. The car is effectively a black box.

We didn't set out to be educators or even scientists, and we don't purport that what we do is real science but we're demonstrating a methodology by which one can engage and satisfy your curiosity.

Gravity. It's not just a good idea; it's the law!

I'm not a sculptor; I'm a hard-edged model maker. You give me a drawing, you give me a prop to replicate, you give me a crane, scaffolding, parts from 'Star Wars' - especially parts from 'Star Wars' - I can do this stuff all day long. It's exactly how I made my living for 15 years.

Of course, I love tools. I also love arranging them, to the point where I came up with a name for my organizing metric: first-order retrievability.

My advice is keep your lips away from the spinning things.