The Space Core was also designed to be an idiot. and the Factual Core was intended to be a genius, but again he also became a blabbering idiot.
The name of the cores are, namely, corrupt. They were most likely designed to be things of different lengths but however something in the data messed up, and now they are.. well, corrupt.
The fact sphere was possibly supposed to be highly informative, but malfunctioned and now sticks with a set. Maybe the space core was supposed to be knoledgable to space, but went malfunctioned and only talked to itself about space. Just consider the same with rick, who was most likely supposed to give the recipient (such as GLaDOS) bravery or a sense of fun in danger as not to be paranoid about things.