I don't understand the advantage of rolling a 100side die vs 99% biased coin flip - assuming they are balanced right, both should be equivalent.

I was just remarking on the outright pointers in those two points that status quo is bad / speed of change is god etc. - There is a difference between being against change and being resistant to change.

I am all for incremental changes because I strongly believe existing tested and hairy systems got there by handling a million corner cases that the new one is probably going to solve all over again.

Replacement systems become warranted only in those cases where earlier systems have lost any form of iterability and are stuck per-say and have been obsoleted in some ways. Most of the other scenarios are just developer job-security :)

Again all the above apply only for reasonably complicated systems. I am all for hello world's getting rewritten every day.