how do we know where a number begins or ends?
this is an example of what i am talking about:
0----------1----------2---------3 these lines represent 1+1=2
by looking at numbers represented by lines it appears that 1+1 actually ends past 2 and at three. I know that 1+1=2 when we think of numbers as being a whole like two apples, but in reality when the second apple is added havent we completed two and reached three? I guess you could even contend that the apple is at its greatest amount in the middle and recedes as the apple is "completed".
Basically what I am asking is how is the beginning or end of a number decided on. The line i made and connected is something i just decided on but could obviously be different if someone else drew the lines of any length.
Am I making any sense or does this sound REALLY dumb?