Originally Posted by clickwir

Fractions and decimals are not always equal.

That's the single biggest flaw in his whole explination.

Yes 1/3 = .33333 repeating. It equals that because 1/3 cannot be completely expressed in decimal form. You can't write 1/3 in decimal form and be 100% accurate. .33 repeating is not 1/3, it's as close as any number can get to being 1/3. But that doesn't mean it is 1/3.

Same with 2/3 and same with .9999 repeating. Yes it is the closest you can get to 1, but it is not 1.

Assumptions and rounding does not equal accurate. Therefore, .999 repeating does not equal 1.