My range is better than your range

Here's a simple guideline that came to mind after listening, watching and reading too much about poker:

The last raise on any street represents the strongest range.

By keeping this rule of thumb in mind, it's easier to deduce which player is representing the strongest range and evaluate how your actual holding compares.

If your perceived range is significantly better than your opponent's, then running aggressive bluffs can create plenty of folds. Likewise, if your perceived range is weaker than your opponent's, you can induce bluffs or get extra value on later streets.