Why Did T Rex Have Such Tiny Arms?

The video explores the mystery of the Tyrannosaurus Rex's small arms, questioning their usefulness in hunting, mating, or other activities. It discusses various theories, including evolutionary advantages, energy conservation, and random genetic drift. The video also highlights ongoing scientific research to determine the purpose of T. Rex's arms, comparing them to human traits like thumbs and tailbones. The conclusion remains uncertain, as scientists continue to study the microscopic wear on T. Rex's arm bones.

What does the comparison of T Rex's arms to human tailbones suggest about evolutionary traits?

What current research is being conducted to understand the function of T Rex's arms?