Earlier quoted context omitted.
If you have a pond with 1000 fishes, and each year the population of fish doubles, you can remove 501 fishes/year for quite a while. You are clearly in an unsustainable situation, yet it will take time for the population to completely collapse. These limits are in the sense that we cannot stay above forever, not in the we cannot go above ever sense.
Well, only for 8 years. 1000 998 994 986 970 938 874 746 490 ooops
1000 1499 2497 4493 ...
it pays to be be patient!