How Did Octopuses and Squids Develop Such Big Brain

Cephalopods, which include octopus, squid, and their cousins, the cuttlefish, exhibit some very endearing habits. They may swiftly analyze information to change their shape, color, and texture to fit in with their environment. They may also utilize tools to solve issues, communicate, and exhibit indications of spatial learning. They're so intelligent that they may experience boredom. However, how did squid and octopus acquire such large brains?