Knowing by thinking

Some things can be known by thinking alone, once you understand the words: sums, that a triangle has three sides, what follows from what. Philosophers call it a priori knowledge. Most things about the world have to be looked at.

Depth 1 · Foundation

You can sort claims into ones known by thinking and ones known by looking, and say how each kind is checked.

Depths of understanding

1
Foundation
You can sort claims into ones known by thinking and ones known by looking, and say how each kind is checked.
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- Knowing by ThinkingKnowledge Level 2: Reasons, Luck and Doubt
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Sources of knowledgeThinking alone is one of the ways of knowing, beside looking and being told.

Your path here

What's still between you and Knowing by thinking, depth 1, in the order you can learn it.

Builds on

Sources of knowledgeThinking alone is one of the ways of knowing, beside looking and being told.

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The problem of inductionHume showed the future being like the past can't be known by thinking alone.