l o g i c a l

vol. 02 · broken grid edition
i.

Premises

Three foundations a day of clear thought rests upon. Hold them up to the light.

01

Identity

A thing is what it is. Whatever name we give it, the thing itself does not waver while we name it.

A ≡ A
02

Consistency

A statement and its denial cannot both be true at once. If they seem to be, one of them has been mistaken for something else.

¬(A ∧ ¬A)
03

Sufficient Reason

Nothing is the case for nothing. Whatever is, has a reason for being so — even when the reason hides itself.

∀x ∃r · cause(r, x)
ii.

A Small Reveal

The simplest argument, laid out one pane at a time.

premise 1

If A, then B.

premise 2

A.

therefore

B.

∴ Modus ponens, in three quiet panes.

iii.

A Worked Example

A syllogism, offset by intention rather than by accident.

  1. P1

    All things that follow from clear premises are themselves clear.

  2. P2

    This conclusion follows from clear premises.

  3. ∴

    This conclusion is itself clear.

    this is what logical reasoning looks like

logical.day — a quiet practice

vol. 02 · translucent frost · broken grid