LessonsNazar, Fikr and the Definition of LogicQuiz

Errors can occur in definitions as well as arguments.
Weak definition: 'A square is a shape with four sides.' Rectangles and many other quadrilaterals also have four sides.
More precise definition: a square is a plane figure with four equal sides and four right angles.
An adequate definition should capture identifying features. Its formal conditions will be studied later.

Opening interactive controls...

An error in definition

Nazar, Fikr and the Definition of Logic

Errors can occur in definitions as well as arguments.
Weak definition: 'A square is a shape with four sides.' Rectangles and many other quadrilaterals also have four sides.
More precise definition: a square is a plane figure with four equal sides and four right angles.
An adequate definition should capture identifying features. Its formal conditions will be studied later.