There are two ways to define thinking: each leads to a different answer to the question of whether thinking is conscious or not.
- Thinking as a subjective experience. If someone asks you what you are thinking about, you can introspect, and describe your thought process. You can also say that you weren’t really thinking at all.
- Thinking as the cause of ideas and thoughts. If you discover a thought, then you can infer that the process that led up to the thought was a form of thinking, even if there was no subjective experience associated with the process.
We can test our preference for definition 1 or definition 2 by considering an example.
Sherlock Holmes was a good chemist. When he found himself stuck while attempting to solve a mystery, he would sometimes distract himself by doing a chemistry experiment. At the end of such an experiment, he often found that a solution simply popped into his head.
No measurable physical quantity is ever infinite. In other words, only theoretical concepts can be definitively labeled as infinite. But that is perhaps an epistemological claim that is unnecessary here. So let’s dive into the nitty-gritty of how visual ‘resolution’ is actually measured. As we shall see, the number of light sensitive cells in the retina does not tell us what the ‘resolution’ of the visual system as a whole is. In some circumstances our visual ‘resolution’ exceeds that of the eye considered in isolation.
Visual acuity  is the sharpness with which we can distinguish patterns of light on the retina of the eye. This depends on the exact location of the light falling on the retina.
Interested in participating in a (totally unscientific) survey on consciousness and related questions? The link is in the preceding post. Once you complete the survey, you’ll be able to see the results. It should take between 20 and 45 minutes to complete, and will hopefully be stimulating, at least somewhat.
The password for the post is the last name of the philosopher who coined the term “Hard Problem of Consciousness”. It is very easy to google the answer. Capitalize in the standard way.