saying humans will lose intelligence is a misnomer, because even if people are "dumber" in that they dont know how to make fire or dont know how to make electricity work, we can find the information almost instantly, and read on how to do it/make it work in just a few minutes. information is more accessible than ever before and that accessibility replaces our need for us to store that intelligence in our own heads. as long as humans have the ability to learn still, which is a vital skill for humans to have, we wont lose any "intelligence". this is why we dont learn how to do much math anymore without a calculator, because using a calculator can get us the information we need and its more valuable to learn other aspects of math than specifically how to do one formula by hand.