How Intelligent Can Octopuses Really Get?

Dominica: Is it possible to put cephalopods on a scale with dolphins and apes, the vertebrates that you mentioned? Ray: I think one of the problems with the measurement of intelligence is that we're continuously trying to measure intelligence by how like us an animal is. So for example, if the octopus is curious, well, it's a sign of intelligence, right? Because we're curious. And Douglas Hofstader actually suggests a different definition of intelligence, which he thinks is a little bit less species specific but more all encompassing. He suggests semiotic freedom as a measurement of intelligence. This is basically given an input into a system, what are the number