Joe,

I just opened up a used disposable razor and tried the "test". There is a smooth feeling, but also the sensation of the blade cutting in. That is what the test is testing for, a smooth "cutting in" sensation, or "sticky" feeling. You do need to apply a little pressure, but not much, just the weight of your thumb or finger is enough. You should also slightly moisten the skin first.

Do you have thick or callused skin over your fingers? It takes a very sensitive touch to detect.

Scott