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Critical thinking consists of mental processes of discernment, analysis and evaluation. It includes possible processes of reflecting upon a tangible or intangible item in order to form a solid judgment that reconciles scientific evidence with common sense.

Persuasion is a form of social influence. It is the process of guiding people toward the adoption of an idea, attitude, or action by rational and symbolic (though not always logical) means. It is strategy of problem-solving relying on "appeals" rather than strength.
Manipulation is taking persuasion to an extreme, where the one person or group benefits at the cost of the other.

Procedural memory, also known as implicit memory or unconscious memory, is the long-term memory of skills and procedures, or "how to" knowledge (procedural knowledge).As compared with declarative memory, it is governed by different mechanisms and different brain circuits. Procedural memory is often not easily verbalized, but can be used without consciously thinking about it; procedural memory can reflect simple stimulus-response pairing or more extensive patterns learned over time. In contrast, declarative memory can generally be put into words. Examples of procedural learning are learning to ride a bike, learning to touch type, learning to play a musical instrument or learning to swim. Procedural memory can be very durable.

Fluency is the property of a person or of a system that delivers information quickly and with expertise. Fluency indicates a very good information processing speed, i.e. very low average time between successively generated messages.