Viewing the electronic devices' lifetime/shelf time, in fact Ipad can be greatly weight reduced and also cost by:
- The glass cover can be replaced/made by plexiglass, which only half of density of glass, i.e. 1.18/2.5= 47.2%
- The AL casing can/should be made of plastics e.g. ABS, PC, PA, or even PP, with texture surface or cover with textile(or leather). which will give another 30 ~40% weight reduction.
- All these together give at least 130g weight down, which comes down to ~550g!
- and the final price is also to be down too.
- But Apple is just greedy.