This is what's known as hedging.
If I get pulled over 10 times by 10 different cops, and I offer each one $100 to let me off, and only one of them takes the bribe - the other 9 don't negate the fact that one guy took the bribe.
"No your honor, I just like giving money to police officers whenever I meet them. See, its just random chance that this one guy let me off. Clearly it was on the merits of the situation, not because my money influenced him."
Cops don't make the laws of course. Otherwise you'd be allowed to bribe cops.