I have yet to visit this misterious universe you describe.

>> is difficult to re-process

> That's not a problem. You just don't reprocess it.

There's not enough uranium in the world to last us more then a few decades if we leave 60-80 percent of it unreacted in spent fuel.

These things together mean it has quite low utilization of enriched uranium.

1) Inertial mass and gravitational mass are exactly equal without an explanation why

or

2) The acceleration is just an effect of a curvature of space.

Imagine two bodies thrown exactly Northward on a sphere. Although their paths are parallel they would approach each other, as if there was an acceleration. This acceleration would be the same whatever their mass is.

> How do you explain airplanes flying upside-down?

Angle of attack is what causes lift. If you have a surface angled against the relative wind, it will produce lift.

I would argue that TDD doesn't imply writing unite tests - it's about writing any tests first.

If you have acceptance tests already written out, you're already doing TDD.

After testing a lot of different layouts I've settled on a slightly modified Colemak-DH.

This would be like criticizing double-entry accounting by asking "if you know what the amount is, why write it down in two places?"

We write the code down in two places because that gives us advantages that far outweigh the added effort:

- Once written, your test will catch regressions forever

- A test is often excellent documentation on what the code does

- It's now much easier to refactor the code, making it more likely that it will be refactored when needed.

It got us to a place where the cost of a rocket launch is 10 times less than it was before, and soon it will get us to 100 times less. It's just a matter of time that this is leveraged to bring us to new physical places.

> And equalizing SpaceX successes with Musk a person does way more than just rub me the wrong way.

He is the person that single-handedly made the decision to start a rocket company, decided on the initial architecture, hired the key people and finance the whole operation.