As stated before, an easy way to visualize 0.9 = 1 is
1/3 + 1/3 + 1/3 = 1
1/3 = 0.3
0.3 + 0.3 + 0.3 = 0.9
Thus 1 = 0.9
So if we do the same for 2:
2/3 + 2/3 + 2/3 = 2
2/3 = 0.6
0.6 + 0.6+ 0.6 = 1.8
1.8 = 2, but you can see that 1.8 isn't anywhere close to two.
Then again this is why the above 1/3's and 0.3's proof is a simplistic way of looking at 0.9 = 1, as it's not an accepted proof, just an easy way to visualize it. The same is true for 1.8 != 2. It's proven in a geometric proof, and the above is a simplistic way of looking at it, even if it isn't 100% concrete.
