If you ask me: - write the whole stack yourself so you can fix any problem or make any improvement without external dependencies or coordination - the implemen

If you ask me: - write the whole stack yourself so you can fix any problem or make any improvement without external dependencies or coordination - the implementation is never written in stone and it is always possible to move to something better ( which is why you need to control the whole stack ) - no problem is too big to start solving - implement something basic that works and then improve it ( see all of the above ) - evolve everything in the open