Here's the thing you need to remember about people-
100 is the average IQ- and because only a tiny percentage of people is actually at a level 100 it actually means that half of all people are below 100 and half of all people are above. So when you go someplace like WalMart or a pet store remember that even if they try to hire people who know what they're doing, statistically half of the people who apply for those jobs will have an IQ lower than average. Maybe even more in some places. Then they do weird things like sticking bettas in with tiny delicious guppies or huge carnivorous cichlids- and want to argue with you about it. I'm not being elitist- I'm just saying not everyone can be expected to understand the finer points of animal behavior, and yet they find themselves in the position of having jobs where that's exactly what they're expected to do. ick