You earn badges by outperforming the market over various time periods, voting on content, and posting straws and valuations.
Since July 2021
I've been an academic mathematician since 2011. I'm not in applied maths or statistics (I work in mathematical physics), so don't expect any deep mathematical analysis of the markets.
I started investing in 2015 and learned 2 powerful lessons right away: don't catch a falling knife, and dividend payers are not necessarily very reliable. (Thank you RFG and G8 Education.)