text: What happens then, if the senses which we 'scientifically' use in this 'proof test' are in turn illusions of our mind and don't really exist?\n\nWhat is touch, sight, sound, taste and smell other than signals from our 'sense organs' going to the nerves and ultimately the brain - which is something man is yet to fully decipher?  Why then rely on these 'senses' as instruments to prove that something metaphysical exists or not?