Our brains use two different systems when it comes to reasoning.
The first system is slow and analytical and we’re consciously aware of our surroundings and what we’re looking at.
The second is below our conscious awareness, which is effortless, quick and automatic. Also known as our intuition.
When we come across something (like a book, for example) that is easy to process, we’re able to reason quickly and effortlessly. We know what the book is about, we can clearly see the title, the description is easy to read and understand, and we do not have to over-think which would give us the opportunity to back out.