Because there is little point in trying to make new contacts if you don't feel good about it, you just won't do it very well. (thecareeradvicecentre.com)
I won't sleep otherwise, so there's no real point in trying. (thenomisniche.com)
This test is a starting point in trying to see if this can be accomplished in a collector that is straight forward and inexpensive to build. (builditsolar.com)