The ability to differentiate.

One of these things is not like the other, even if they seem the same.

In studying for my ham radio Technician test, I learned a lot of things I hope to never have to explain to someone who actually understands it.

One of the questions out of the possible bank of questions has to do with the difference between equipment that is sensitive and selective. Sensitivity, in this case, is being able to pick up on faint signals. Se…