Why does the mouse pointer lie without lying?

This is probably the question of many babies when they first come into contact with a computer.

Since 1981, the year when people thought of a computer mouse at the Palo Alto lab of Xerox, the shape of the computer pointer on our screen was always a 45 or 22.5 degree tilting arrow, never lying vertical.

The reason to explain this is quite simple: By the time Xerox engineers created the mouse, the screen resolution was poor and we could not tell where the cursor was, what was the display. Marketing. Therefore, they made the cursor tilt, which is more distinctive.

Interestingly, even if the computer has a much higher resolution, people have not changed anything for more than 30 years.