I used to trade like RSI at 30 was a green light. Bottom's in, buy it, done. Then I watched a stock sit under 30 for three weeks while I averaged down the whole way. That trade taught me something that reframed every chart I've opened since.

Here's the core of it.

Every indicator on your screen — RSI, moving averages, MACD, Bollinger Bands — is built from one input: past price. Nothing from outside the chart. RSI is price rescaled 0–100. MACD is one moving average minus another — price minus price. They repackage what already happened into a shape your eye reads faster.

That means they describe. They don't predict.

RSI at 30 isn't a coiled spring. It's just telling you price has been falling harder than rising, recently. A falling knife has a low RSI the whole way down. A golden cross isn't ignition — it's smoke that shows up weeks after the fire started, because a 200-day average is a slow echo of old prices.

The handle I keep in my head: it's just price wearing a costume.

What a disciplined trader does with that: use the indicator to describe the present, not forecast the future — then let your risk model size the trade. If volatility just expanded, that doesn't tell you direction. It tells you outcomes got wider, so your stop needs room and your position needs to shrink to keep dollar risk fixed. The indicator sizes the bet. It never picks the direction.

The accounts that blow up aren't wrong because the market fooled them. They're wrong because they borrowed certainty from a number that was only ever summarizing the past.

This is educational commentary, not personalized financial advice — think it through for your own situation.

Full breakdown with the chart examples here: https://youtu.be/tFkY4uPhQDU

Signal, not hype.