I can help you there. Most "memory" is kept in the hippocampus (sp?). Memories are formed when synapses are formed, that happens when a thought is fired through the nerves many times, so it leaves a lasting footprint of sorts. Scientists have found memories are dissected and sorted for storage, then reassembled for recollection. They also converted 3 mouse memories into binary... --- (1) My question: if everything has a purpose, what is that of the cockroach? Ahh, thanks for that. (1) Easy. To exist and reproduce. true, that is what they need to do, but how does it affect its environment? unless somehow it was known we would pollute the world billions of years after the creation of the cockroach, as they would die offf if we would stop producing garbage. almost nothing eats them, they don't eat or do anything useful... maybe it's right up there with the appendix.... When almost nothing eats them, that means something does. AKA, they have a purpose. To be eatten by certain animals.