The simplest solution is often the hardest to find.

I was once told a story, as I recall, it was about Isaac Newton (unproven creator of the doggy door). The story stated that he had a pet dog and a pet cat. The dog was much larger than the cat, and as such, he installed a door for each. A large one for the dog and a small one for the cat. It was only after he witnessed the kitty using the doggy door that he realized he only needed the one door.

I think it's funny how great minds tend to do things the hard way. Someone once told me they had a brilliant brother and a lazy cousin. Any time they needed something done efficiently, they would ask their cousin because he always had a quick easy solution where as his brother would spend hours explaining some convoluted plan that looked good on paper but wasn't practical.

I can't help but wonder if sloth, at least in this context, is a virtue.