Too Long; Didn't Read
Mark Helfman: Altcoins have already gone up 300% this year. Altcoins will zoom, but a big drop in bitcoin’s price or a long sideways move is inevitable. Altcoin market will crash at some point, and you will have to sell to protect your investments from greedy people who will crash the market. If you’re patient and savvy, you can realistically pull off 3,000% gains, and possibly even better. Most altcoins are up 500 or more than 500% in the current bull market.