Branch predication is like guessing what will happen next when reading a storybook. When we are reading a storybook, sometimes we don't know what's going to happen next until we turn the page. Branch predication helps the computer to guess what will happen next in a program before it happens for real.
Just like we turn the page to find out what will happen next in a storybook, a program sometimes needs to choose between two or more paths to follow. When this happens, the computer tries to guess which path will be taken before it actually happens. This is like us guessing what will happen next in the storybook, based on what we already know.
To make these guesses, the computer uses information from previous times the same part of the program was run. If the computer's guess is correct, it can save time by starting work on the next part of the program right away. If it's wrong, the computer will need to go back and start again, but it's still faster than waiting to find out what really happens.
In summary, branch predication is like guessing what will happen next in a program, based on previous instances that are similar. This helps the computer to save time and work more efficiently.