الْفَرْقُ بَيْنَ الْحِسِّ وَالتَّجْرِبَةِ
The difference between immediate sensation and experience.
Perceiving an event once is a sensory occurrence. Experience often involves repeated observations, attention to circumstances and reflection on how outcomes are connected.
If one patient improves after taking a remedy, that is an observation, not by itself a reliable universal claim. Alternative explanations and further evidence matter.
Classical discussions recognize experiential knowledge, but its acquisition can involve both sensation and reason. Accordingly, it need not be counted as a wholly separate fourth foundational source.