[takinola]

Sounds like dogs found another way to solve their problems ie get humans to do it for them. It's a pretty good solution as long as there is a sympathetic human around. Of course, they would be SOL if they ever find themselves alone out in the wild.

[vel0city]

I'm not familiar with the study, I wonder if they also did the test with no human around. Anecdotally, my dogs can be pretty lazy about getting into things when I'm around, but seem to get creative when I'm out.