Why Don’t Haircuts Hurt?

The video explains why haircuts don't hurt by discussing the absence of nerves in hair and nails. It delves into the role of nerves in the body, highlighting how they help us sense the world through touch, sight, hearing, smell, and taste. The video also describes how messages from nerves travel to the brain, allowing us to interpret sensations quickly. Finally, it clarifies that hair and nails lack nerves, which is why cutting them is painless.

What new insight or understanding did you gain from this video?