efficacy of aluminum helmets

[NsXMas]

From aluminum cars to helmets, here's an in-depth MIT study on the effectiveness of aluminum helmets.

efficacy of three aluminum helmet designs on a sample group of four individuals

 

[NeoNSX]

lol... it's even written in a way that follows the formatting standards for a thesis paper.

However, they did not provide any hard data supporting their figures... so how can we know the figures are indeed true? For now, I'm sticking with the triple-layer foil helmet of my own design.