For humans, everything begins with the senses.

Let’s break down the process from sensory data to concepts via precepts and percepts:

1. Sensory Data: This is the raw information that our senses (sight, hearing, touch, taste, and smell) pick up from the environment.

2. Precepts: These are the immediate mental images or impressions that are formed as a result of processing sensory data.

3. Percepts: Percepts are the result of further processing of precepts.

4. Concepts: Concepts are abstract ideas or mental symbols that are formed from our percepts.

So, without the senses, “reason” is merely a brain in a vat, and you are not going to get any meaningful results vis-à-vis the real physical world and the requirements to survive, prosper, and be happy in it.