"That makes enough sense." Artemy agrees, "Our species does not see well in the dark, we are inclined to light up spaces, in order to see better, to protect ourselves. And the heat is necessary as well, the warmth."

Fire. Probably one of humanity's greatest inventions. He can imagine Dankovsky going off on a tangent on the subject.

"Do your people have many holidays?" He asks, genuinely curious. "Mine, truthfully, do not do much celebrating at all."