It is entirely possible to stop, refactor, be a little behind on features, slam in a few features, not catch up but screw up the code, and loop forever, never getting benefit.

停下来、重构、稍微落后于特性、专注于少量特性、不赶进度而是优化代码，如此循环往复，却从来不受益；这样的状况完全有可能。

youdao

As seems to be par for the course with Kickstarter projects, the blockbuster smartwatch is more than a bit behind schedule, but the team is hot on the case, keeping backers in the loop with regular update posts.

ENGADGET: Pebble smartwatch hit with further delays, won't be stuffing a stocking near you