GIGO stands for garbage in, garbage out. It is a computer science and mathematics concept that the quality of the input determines the quality of the output. In other words, in a processing system, the data’s quality coming out cannot be better than what went in.
Therefore, a program will only yield misleading results if it is working on faulty data.
In mathematics, for example, if somebody states an equation improperly, the answer will probably be incorrect.
Computers can only operate on strict logic. Therefore, invalid input may result in ‘garbage’ or unrecognizable output. If I try, for example, to open a binary file in a text editor, it will probably display unreadable content.
The quality of information coming out cannot be better than the quality of information what went in.
so that, if we put correct information or good info or good idea we will product good result but if we put wrong info exactly, we will get wrong results.