It's still being debated (for what that's worth) but there are numerous studies that indicate that they do [1]. I don't think we have any workable theory at th

It's still being debated (for what that's worth) but there are numerous studies that indicate that they do [1]. I don't think we have any workable theory at this point that would explain how exactly (biological) neural networks produce pain, or predict how complex they need to be to do so. [1]: https://en.wikipedia.org/wiki/Pain_in_crustaceans https://en.wikipedia.org/wiki/Pain_in_crustaceans