If dark matter affects normal matter (by gravity), does that mean that normal matter also affects dark matter? I think it does... In which case; Black holes could attract BOTH dark and normal matter? Does this give any opportunity to "information loss"? What if some information in normal matter does not "disappear", but it becomes dark matter? Also, in thermodynamics, in all isolated systems, entropy level increases? A black hole is not an isolated system, since matter that is outside goes into it (also, light). Does that mean that the more a black hole devours, it becomes bigger, but also decreases in entropy? Or, Entropy becomes so BIG that it evaporates? And if dark matter can be sucked in by black holes, that means it follows the rules of thermodynamics? Specifically, entropy? I am sorry if I have some logical failures in this, I am learning about awesome, exciting, and to me new physics :P.