Well, you would have greatly even developed further than you have currently in knowledge because 4 years is a lot of time to really get a lot of knowledge. There are many members currently who have not been in the forum for up to four years but know enough and may be able to even correct someone who has known about cryptocurrency for more than four years but not a member of the forum. If you commit yourself to really learning, you will be able to attest to an increase in your knowledge about bitcoins by the end of the year.