NOT touching a blade before buying.
ANALOGY:
NOT being run over by a car before buying.
The blade is the hurty bit. "Test drive" the handle instead. If you need to be sure that the blade works, ask to cut something with it (not yourself!)
I fully understand why touching the blade is a must in a folder you intend to buy (to check for play), but on a fixed-blade I just don't get it. On the other hand, I also don't much care - that's what chamois is for.
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-Corduroy
(Why else would a bear want a pocket?)