[rg111]

> the time I spent learning Octave/Matlab for Andrew Ng's course was 100% wasted time

Really?

If you have programming experience, you don't really need to learn Octave.

Some formulae were the code.

In case of others, the whole program was written, with one or two missing lines that you had to implement.

I spent zero time learning Octave, because there was nothing to learn.