> In some cases imprisonment and an utterly ruined career are the result of mistakes

This is quite an exaggerated point; the number of people imprisoned for making mechanical, civil, or electrical engineering errors is very close to zero in the US.

I think more programmers have actually been charged than any other field, although I can't quote a statistic to back that up.

Architects absolutely have gone to prison for building something in a shoddy manner that results in death.