How to train your dragon 3 confirmed.

What if the whole world suddenly turned into a massive community of advanced pigeons?

They will advance more than us, humans.

What will happen to a Concorde flight if the speed of sound was faster than the speed of light?

Edit: ik I said "what will" not "what if" but you can clearly see the word "if" which means I didn't breake any rule :P

As the plane approaches the speed of light, it begins to undergo nuclear fusion with the atoms in the air, releasing high energy radiation. After just a few microseconds, the entire plane has been vaporized. This would appear as a blinding turquoise flash of light, followed by a tremendous shockwave and the formation of a mushroom cloud. The speed of sound would not suffer from this limitation, since the individual atoms are not moving anywhere near that fast, like an electrical signal which moves at nearly the speed of light, but the actual electrons only move a few centimeters per hour.

What if the Earth's atmospheric pressure was ten times higher?

Our future grandchildren will be pancake-sized people.

What if every single person on Earth suddently stopped thinking, only letting instinct and desire define their actions?

We'd probably end up destroying ourselves eventually.

What if everyone had to wait 30 minutes for a webpage or anything to load?

Then I would wait patiently as everyone raged and attempted to fix their computer. I'm very used to super slow software.

What if you punch air with Newton's Law in place?

Banana would happen.

What if the entire Earth suddently became steampunky?