I am currently researching how the aesthetics, uses, history, etc. of the modern lock and key explains in any way imaginable the intelligence or inherent characteristics of the human being. This research can be extended even to the most bizarre of thoughts. For example, the following:

Currently, I have the simple idea that the lock and key (while it is believed to protect one's prized possessions) can be analogized to love (and maybe even coitus). I am going with the idea that once one enters the heart of another individual, all the secrets and possessions are theres.

Also, I am looking at how the aesthetics -- the prongs and typical asymmetry -- of the key can come into play.

Any ideas of how I can extend my research, and are there any literature out there that may help my research?