Fibonacci retracement? Still my go-to. Dead simple to use, ridiculously effective.

Here's why it works: everyone's watching the same levels. That collective attention creates real support and resistance zones.

What's interesting—and I've been tracking this for a while—previous market cycles showed different behavior patterns at key Fib levels. The crowd psychology shifts, but the tool stays relevant.

Basic doesn't mean useless. Sometimes the oldest tricks in the book still print.