[hindsightbias]

What percentage of goggle engineers are:

- Maintaining old stuff

- Rewriting old stuff

- Writing new stuff

You can't do w/o most of the first, most of the second is a waste, and maybe a quarter of the last is worthwhile. I've always had the feeling google isn't filled with a lot of the first, as it's just not cool.

[TideAd]

From everything I've heard it's less "not cool" and more "not valued by the Google promotion and advancement system".