What you really want to understand about a personal trainer that you're considering using, is how deep their understanding of how the human body works is. (personaltraining4u.net)
This is great, but I feel like I got a much deeper understanding of what the game wanted to be from watching this than I did from actually playing it. (zam.com)
The limits became clearer with deeper understanding of how living organisms work: not through commands from some kind of centralized mission control, but via a distributed interaction with their environment. (discovermagazine.com)