Unless that person happens to be with their dad, that would then require finding their dad. That’s a whole extra person to find. It might be easier to skip straight to finding their dad.

Triangles taste objectively worse. The acute 45° angles are not effective at retaining sandwich contents so you are just tasting plain bread.

By cutting orthogonally you create 90° corners on each segment, allowing a uniform distribution of delicious filling throughout each sandwich segment.

That’s just maths.

Real scientists would say two gigacraters.