Next time you are in line at a convenience store, look behind you. What if the person behind you intends to rob the store, hold you hostage if things go wrong?
That's a fairly contrived situation. Ten times more likely is that the robber standing behind you in line will wait for you to exit the store, rob the clerk afterwards, and use the single clerk as their hostage rather than having 2 unknowns instead of one to worry about. After all, there are "evil gun nutcases" everywhere and you never know when the guy in front of you in line is one of them. Put yourself in a robber's shoes...
WHAT WOULD YOU THINK OR DO???
Negative, it involves exchanging a part, but for legal and safety reasons I am going to refrain from explaining further