I realized I all those things you pointed out about shell usage -- my point is that copying and pasting "eliminates" a source of error, not that I can't correct errors in Terminal. I'm well acquainted with history, too. If I copy a filename, I know I won't misspell it, and I won't need to use backspace or arrow keys. That tip is useful for all computer usage, not just for command-line and Terminal action.

Thanks, though -- and it never hurts to mention such things, since other readers will not have realized that you can, for example, drag a folder or file into Terminal to see its proper, complete path typed out for you.