There is obvious math mistake in the following claim. It is possilbe the earth gets filled up before your dynamic stability reaches itself.

Just make an analogy to math problem of filling a leaking water tank. If your tank is big enough, you can reach stability, if not, you ofcourse can fill it up.

　（２）垃圾增加
　　通常垃圾的降解时间是从几周到几百年，假设平均为一百年。粗略的说当地球积存了一百年的垃圾后，将达到一动态平衡：新产生的垃圾等于降解的垃圾，垃圾量将不再增加。一百年的垃圾铺满地球是不可能的。