Nine out of ten contracts are pitfalls, and one is a big pitfall. For newcomers, don't think about making money when playing with contracts, just make less losses. If you want to do contracts and make money in them, you need to be fully prepared and learn, and once you get emotional, it is easy to trade impulsively, leading to irrational trading decisions. Panic closing, greed, adding positions, etc. are common mistakes made by novices.
