Optical illusion

Our senses cannot always be trusted. Our mind is the final arbiter of truth.

Perpetually ascending staircase.
How can the man go up all the time and come back to the same place over and over?

The red squares are the same color in the upper part and in the lower part of the "X"

The diagonal lines are parallel.

There are no gray spots at the corners of the squares.

The rows of black and white squares are all parallel.

Impossible Triangle.

Parallel lines at sunrise.

The center circles are both the same size.

The Vertical lines are both the same length.

Three-prong fork.

are only white circles at the intersections

Wavy Squares? No! The background of concentric circles makes the squares appear distorted.

further away from the screen while looking at the dot in the center.

Warped Square? There are no curved lines in this figure.

So never make a decision based on your observations...

Think of what you saw and what you heard...
Analyze the fact and make the decision.