what is your theory on evolving human intelligence?

from the days of the native American Indian, until now. and from now until the 25th century. looking at the progress over the last 500 yrs. how do you think we will progress over the next 500 yrs. serious post only please. i would like to see how peoples honest answers differ. unless you can think of something laughable of-course. have fun with this but be serious. thanks
 
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