Interestingly, floor decks in airliners and load floors in military cargo aircraft are made from a composite of an aluminum skin and very high-quality end-grain

Interestingly, floor decks in airliners and load floors in military cargo aircraft are made from a composite of an aluminum skin and very high-quality end-grain balsa wood panels, laminated together in a huge press with film adhesives. (Used to be called Metalite by LTV, who made the stuff for lots of other aircraft companies...) It's lighter and stronger than any synthetic composite for that application. Load floors obviously need to take huge abuse, but still be light, and women's stilletto heels are famous for being able to exert several thousand pounds of force (dynamically) in a tiny area. FYI, women are also really hard on touchscreens - fake nails/nail polish is the hardest and most abrasive thing they come in contact with over their life except for drops on pavement. It's the main reason all decent touchscreens now have glass top layers.