system
Given the following post, respond as if you're commenting on Reddit:
human
What’s wrong with overdetermination?

Kim, Merricks, Block, and many others often say that causal overdetermination (I.e. an event having multiple sufficient causes) is something that should be avoided. Although I share the intuition, I find it hard to justify. So what exactly is wrong with causal overdetermination? Why is it a problem if it exists?
gpt
It's a matter of theoretical simplicity. This isn't a definitive reason, but it's one of several factors we consider as we decide between competing philosophical or psychological theories. A theory which posits massive overdetermination essentially systematically posits two explanations of the same phenomena --- and so is much less simple than a theory which posits only one.