[ddingus]

None are useless. They are right about that.

It is about coverage and opportunity in our lives.

The more skills one picks up, the greater the chance any one of them will make a big difference.

Here is a crazy example:

Paper tape. In the late 80's, I worked in some smaller shops using paper tape to drive their CNC machines. I learned all about it and can patch, the whole nine.

A few years ago a call for help found it's way to me and it turns out there are STILL people driving CNC machines off paper tape! I was able to fix the setup and get them running, edit a few programs and repair a damaged tape or few. Made a nice bit of extra cash.