|According to this saying,|
if one link in this fence is weak,
the entire thing will collapse.
Perhaps you've heard the saying that “a chain is only as strong as its weakest link” meaning if one single person in a group is weak then the whole group is weak. Obviously, that’s not always true or even true most of the time. The saying is more true as it relates to actual chains because if a chain has a weak link it doesn't matter if the rest is made out of titanium, it will break. The easy way to get around this problem is to position the weakest link on the end that way even if it breaks you still have a nearly complete functioning chain.
This solution also relates to the metaphor for humans. If you have a team of people, you put your weakest person on the bench away from the action so they can’t negatively affect the team’s performance. Just because they’re on the team doesn't automatically make the team as weak as they are. If they’re put into a key position like the center of the chain THEN the saying is true, but who the hell does that? No one with a functioning brain that’s for sure. Or maybe someone with a brain that’s only as strong as its weakest neuron.