[fuzzfactor]

The proven way to fly people to the moon and back using such low-powered computers was to have a supporting cast of thousands who were naturally well qualified using their personal slide rules to smoothly accomplish things that many of today's engineers would stumble over using their personal computers.

Plenty of engineers on the ground had no computers, and the privileged ones who did had mainframes, not personal at all.

A computer was too valuable to be employed doing anything that didn't absolutely need a computer, most useful for precision or speed of calculation.

But look what happens when you give something like a mainframe to somebody who is naturally good at aerospace when using a slide rule to begin with.