Octopuses and squids can rewrite their RNA. Is that why they’re so smart?

https://www.washingtonpost.com/news/speaking-of-science/wp/2017/04/06/octopuses-and-squids-can-rewrite-their-rna-is-that-why-theyre-so-smart/?utm_term=.f1633b31c191
 

Octopuses and squids can rewrite their RNA. Is that why they're so smart? When Inky the octopus escaped from his tank at New Zealand's National Aquarium in April 2016, he squirmed through a six-inch-wide drainpipe and stole away into the Pacific. He stole more than a few human hearts along the way, too. Inky fans celebrated the animal that outwitted the aquarium: "Please watch out - he is heavily armed," one commentator quipped.