Depends on how broadly you define door. When you think about it, a transistor could be considered as a sort of door for electrons, for example, and there are 19 billion transistors in the processor of an iPhone
A lot of transportation has an equivalent amount of doors, and there a lot of house, apartment buildings, offices… You use a lot more doors every day than you do wheels.
Definitely wheels. All that machinery with wheels for the belts, all transportation, toys, … I can’t fathom there being as many doors.
Unless I’m wooshed :D
Depends on how broadly you define door. When you think about it, a transistor could be considered as a sort of door for electrons, for example, and there are 19 billion transistors in the processor of an iPhone
A lot of transportation has an equivalent amount of doors, and there a lot of house, apartment buildings, offices… You use a lot more doors every day than you do wheels.