I don't know if I wrote the JS.

Recently in writing a small JS, think of n times, also changed n times, later do not know why, the effect on the realization, and then re-read the code, exclaimed: This is the original.
So do you think this code is written by yourself?
I think so, and I think it's not.
The reason: The program itself is through their own continuous and slowly groping, from the wrong to come out;
Not the reason: The program was not at first I expected, but changed to change, in some kind of coincidence to make it.

I don't know if I wrote the JS.