Member since June 5, 2010
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My Recent Posts
Fri 30 Dec, 2011 11:21 am - I don't see why "feeling tired" would not suffice, if indeed a "signal to the mind" is necessary. Do other organisms need a "sleep signal to the mind" in order to...
Fri 2 Dec, 2011 11:53 am - So what you are saying, is that yawning induces sleep, and that is why it exists?
Sat 5 Jun, 2010 12:46 pm - Why Do People Have Different Goals And Beliefs, If We All Have The Same Basic Needs?