system
Given the following post, respond as if you're commenting on Reddit:
human
Bitcoin's supply limit

If one can purchase fractional bitcoins, then how exactly is bitcoin supply-constrained?
gpt
Ten apples are ten apples, even if you can in theory slice them into an infinite amount of slices.

Just taking smaller parts doesn't change the amount that exists.

Or, let's say for the sake of making an example that the total number of bitcoins that exist right now is 2. Can you buy 3 bitcoins? No, you can't. Because they are supply constrained, there simply are only so many in existence. In principle, it doesn't make any difference whatsoever that you can also buy 0.5 bitcoin, or 0.00000000001 bitcoin. Slicing them into smaller pieces doesn't suddenly enable you to buy 3 bitcoin if only 2 exist.