Why Market Depth Can Change Before Price Reaches a Level

A large order appears above the market, and it looks like strong resistance.

But before price reaches that level, the order disappears.

This is one reason displayed depth must be interpreted carefully. Resting orders can be added, modified, or canceled.

I observe whether liquidity remains available as price approaches and how the market behaves when trades actually occur there.

The order book is a changing view of displayed intentions, not a guarantee of future execution.

I avoid building a trade around one snapshot alone.