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[eles]

> Consider the US space shuttle design. It's probably the most 
> wrong-headed engineering design ever, and it persisted because 
> too many billions of dollars and careers were invested into it. 
> Nobody could admit that it was an extremely inefficient and 
> rather crazy design.

Hey, this is really OT, but I'm interested in. Why do you 
consider it is such a bad design? Because the shuttle is intended 
to be reentrant and this is costly? Some other issue?

Is about the design or about the entire idea?

Thanks for answering and I promise to not further hijack this 
thread.