haha, im a sophmore.
but i do agree with you on the nesessity for humans to want to have a purpose in life. Taking care of something not only gives you power, but if makes you feel wanted. A larger tank would be a good idea, but once again it depends on the type of octo you get. A bimac, still relativly small, should have a tank of at least 75 gallons because it swims around more than a dwarf. However, there are other ways to keep it interested. You need to put pleasty of rock in there for hiding obviously, with a lot of caves. It is when they have nothing to do when they start escaping searching for something else. You can even put some realy cheap hermits or saltwater feeder fish, or if worse comes to worse, green chromis in there every once in a while just to keep him hunting have having something to do. I have seen them go through mazes, and creat dens by piles tons of rocks up with one flat one for a door. Even opening bottles and such to get food. Bigger would be better for the tank size, however, depending on the type, it is not always nesessary, just make sure you have pelanty of things to keep him interested and living a good life.