Is this a projection of "the next 90%" issue? "The first 90% took 2 weeks to finish. The second 90% also took 2 weeks to finish (and now your 99% done). The

Is this a projection of "the next 90%" issue? "The first 90% took 2 weeks to finish. The second 90% also took 2 weeks to finish (and now your 99% done). The next 90% also takes two weeks to finish (99.9% done)..." Reapplied to another resource..."The first 90% consumes 1GB of RAM. To solve the next 90% of the problem, takes 1GB of additional RAM... If you continue this trend, the problems solved in the incremental steps maybe used fractionally less often, but are probably also more complex and required a greater resource investments. Our software does a lot more, but the later developed parts are usually used left often and are more complex. Talking to the one and only ship headed to the moon when you don't particularly care who hears you is less difficult than securely purchasing things online over a WiFi connection. At the user experience level its just "thing A talks to thing B" but the later case has also had to solve n-th 90% issues of congestion and security and handshake and... That being said, we rarely go back and see what in the earlier iterations are now based on false assumptions. So there probably is a fair amount of accumulated cruft with no clear detector for what is cruft and what is essential.