Quote from 1a2b3cppp:
Predicting doesn't mean it will DEFINITELY happen.
A prediction is what you think will happen based on the data you currently have available.
I am aware that predictions don't have to be definitive, hence why I made my statement conditional ('IF you define prediction as...).
You are also wrong about what a prediction is, they don't have to be what you expect to happen. A prediction could merely be a statement of probability of an event that is likely NOT to happen (e.g. I may predict a 10% chance that gold crashes on Monday; or this dice has a 1/6 chance of landing 6).