I wasn't questioning the methodology. I think this was a good experiment and really interesting result. I was questioning the shocking surprise at the result a

I wasn't questioning the methodology. I think this was a good experiment and really interesting result. I was questioning the shocking surprise at the result as expressed by the article. A spider's brain is not a general purpose computing device. It has specific evolved functions. Performing that function well is necessary for the continuation of the species; both species have continued to survive, so both species probably perform the function well; no surprise.