Hi, just a simple question. We've always been told that microwave ovens are dangerous and to not stand near them when they're on, obviously because they have the ability to heat up water molecules. I just read that the microwave frequencies they emit are 2.45 GHz. Wifi signals consist of 2.4 GHz frequencies. Why are we not concerned with wifi signals? Is it because the concentration of waves is so much lesser than microwave ovens?