Good point. But aren't personal memories by their nature always something subjective, tainted by experience and other individual factors? Beyond the repetition of memorized of facts (such as school knowledge: alphabet, maths, poems etc) you could never get a completely objective information anyway. The fact that memories are something extremely versatile and individual is what makes the whole sector of memory-research so interesting. The general biochemical aspects are fairly well examined already but the rest is still a huge white spot on the brain map ("here be dragons"