"If one takes a pot through a vineyard, and it increases by a two-hundredth, it is forbidden."

My question is, since if it grows less it is not forbidden, and growth comes little by little, not spontaneously, how can the pot ever be forbidden?!?

Let me illustrate:
A pot contains 1000 parts. As you're walking, it grows by 1 part. 1:1000 is less than 1:200, thus the pot is not forbidden, and you now have 1001 non-forbidden parts!!!!.
You keep walking, and it grows again by 1 part. 1:1001 is less than 1:200, thus the pot is not forbidden and you now have 1002 non-forbidden parts!!!!
You keep walking, and it grows again by 1 part. 1:1002 is less than 1:200, thus the pot is not forbidden and you now have 1003 non-forbidden parts!!!!
You keep walking, and it grows again by 1 part. 1:1003 is less than 1:200, thus the pot is not forbidden and you now have 1004 non-forbidden parts!!!!
You keep walking, and it grows again by 1 part. 1:1004 is less than 1:200, thus the pot is not forbidden and you now have 1005 non-forbidden parts!!!!

Yet the guemarra treats these singular events as happening all at once, so that as you walked through, it grew by 5 parts and 5:1000 is 1:200 so it's all of a sudden 1005 forbidden parts.

Where's the flaw in my reasoning?

bump