This is very much in doubt :)
> They run on binary computers that only do exactly as they are told.
This is true in first approximation. Every CPU instruction runs exactly as it is written, that is true. This is probably the interpretation of "only do exactly as they are told" to someone strictly technology minded. But even with much simpler systems the words "huh, that should have not happened", and "I wonder why it is doing that" are uttered frequently.
The interpretation most humans would attach to "only do exactly as they are told" is that the maker can predict what the code will do, and that is far from the truth.
After all if it so simple, why did the google engineers tell their computer to tell lies about the James Webb Space Telescope? Couldn't they just told it to only tell the truth?