Wake up Saerules. He said the value isn't infinitely long, but the number is. If you don't know the difference between the two, you haven't been following the topic at all.
0.9r is a different numerical representation of the value 1.
Now technically speaking, all numbers are infinitely long. The number line is infinite, and the value 2.5 is actually:
...0000000000000002.5000000000000...
There are an endless number of 0s either side of the 2.5. Multiplying by 10 moves the decimal place to the right, dividing by 10 moves the decimal place to the left. Every number is infinitely long (in both directions) on the number line. The value isn't however.
0.9r is a different numerical representation of the value 1.
Now technically speaking, all numbers are infinitely long. The number line is infinite, and the value 2.5 is actually:
...0000000000000002.5000000000000...
There are an endless number of 0s either side of the 2.5. Multiplying by 10 moves the decimal place to the right, dividing by 10 moves the decimal place to the left. Every number is infinitely long (in both directions) on the number line. The value isn't however.