wikipedia

some wikipedia. interesting philisophical concepts. if it interests you.

http://en.wikipedia.org/wiki/Brain_in_a_vat

http://en.wikipedia.org/wiki/Consensus_reality

http://en.wikipedia.org/wiki/Dream_argument

http://en.wikipedia.org/wiki/Devil%27s_Footprints

http://en.wikipedia.org/wiki/Kelly-Hopkinsville_encounter

http://en.wikipedia.org/wiki/Quantum_immortality

etc