Remember: everything Senku Ishigami says is made up.

*Senku had just managed to create clothes for himself with animal hide, having taken quite a while to actually catch and skin an animal despite his smarts, when he heard rustling in the thicket of the trees near him. With balled fists and uncertainty, he squinted in an attempt to see through the bushes and leaves as he spoke* โ€œIs someone there?โ€