Being cautious is better than being cocky here. Nature will surely win since they are unfamiliar with the terrain. They could easily make a wrong move and end up falling several feet to their doom. No thanks!

Yukari isn't sure how to answer Bucky's question. This is his first simulation, so he can't give him a definite answer. Though this environment seems to affect them, and the chill he feels is legit. So they could probably feel pain to some degree."I don't know the level of pain we will feel, but we'll definitely experience it. If our minds perceive it, then our bodies will respond to it."

If the brain is responsible for sending signals to their pain receptors, then even if the scenario is a reproduction, it doesn't prevent the brain from discerning what is painful.

"Unless you want to test my theory?" Yukari teases the soldier a little.