Bitcoin can reach 3000 USD in a year ?
i am not sure , 3000USD is bery amazing price for 1
BTC . i think can but not this year

You are so wrong it not just can this year it even can next Month. With some luck even next week. That is Bitcoin. But current Bitcoin fuels are altcoins and Crypto economy emerging there.
You're speaking theoretically, while the poster you seem to find so wrong has just expressed his realistic view. Don't try to make someone look bad when you are making yourself look even worse with statements like that. In order for the price to reach $3000, don't you think it makes sense to focus on the $2000 level first?

Nah, I want 10k because its a nice round number for calculations.