posted on May, 5 2013 @ 12:30 PM
Originally posted by jiggerj
No doubt pain is important, else we'd all be sticking our hands in campfires to cook marshmallows. OUCH! But, those nerve endings had to evolve, then
they had to connect to a part of the brain that also evolved to receive those messages.
Yes they did over millions of years of course. You aren't going to suddenly go from experiencing no touch sense to experiencing pleasure and pain.
Pain didn't suddenly evolve from nothing. You are making it seem like there was absolutely no nervous system and then all of a sudden millions of
nerve endings and brain connections appeared.
Pain is good. It teaches you things. You put your hand on a burning stove, you instantly know never to do it again. If you really want to get into
pain, you want to talk about the evolution of the brain and nervous system, which goes way back farther than humans. Pain is a key survival trait,
but it comes from the sense of touch, with the 2 extremes being pain and pleasure. If another creature could just walk up to you in the middle of the
night and start eating you and you didn't realize it, chances of surviving are next to nothing. Stub your toe and don't realize it, and it gets
infected and you die.
We get the idea that our opposable thumbs evolved from frequent use of tools. What did we frequently use in order for the brain's pain gate and
all those nerve endings to evolve?
I wouldn't say the use of tools is what caused opposable thumbs. I think you have it backwards. Thumbs were around before tools. It's more about
the ability to manipulate things with our hands. A creature with thumbs has better success harvesting fruit and grabbing things, which comes in handy
in a harsh dangerous African jungle. It is also extremely helpful in the creation of tools. Creatures with thumbs were more successful than the ones
without thumbs. It's that simple. A common misconception about evolution is that repetitive action leads to evolutionary changes. That isn't true.
Right now humans use computers to the extreme. That doesn't mean that we're going to evolve 20 fingers that are longer, simply because we type a lot.
Does the increased typing lead to an evolutionary advantage to pass down genes? Nope. It's irrelevant.
And it has nothing to do with luck. Originally there were creatures without strong pain sensations, and creatures with them. The ones with them were
more likely to survive and pass down genes. It really is that simple. It's not even close to luck. It's obvious logical linear progression. Pain
evolved because IT DID protect us from tons of dangerous things. Feeling in itself is the first step to pain.
edit on 5-5-2013 by Barcs
because: (no reason given)