I think COVID is enough to disprove this idea. That was the bear market that turned bull ... for some sectors but not others. I don't think the cycles are predi

I think COVID is enough to disprove this idea. That was the bear market that turned bull ... for some sectors but not others. I don't think the cycles are predictable enough to make more profit (on average) than a buy the index strategy. The highly mathematical quants hired by trading firms are doing something pretty different. They are trying to find opportunities for profit wherever they exist using advanced techniques. It is much different to you or me casually using what seems like a "common sense" approach. Most people who say "of course it will..." find that the next quarter is the exception to their definite rule about how everything works.