• Do predictions come true because they were destined to come true, or because people make them happen because it was predicted (like a self-fulfilling prophesy)?

Predictions come true when people make them happen, for example the weather forecast. The weather man predicts whether it will rain or not or when its too hot or too cold out because of the evidence that supports the predictions. Without the evidence or facts the prediction cant be made.
Another example could be the election that happen yesterday, the amount of electoral votes and the states that each candidate won, we can determine or predict who won the election. Predictions can only come true if we want them to come true, such as if you wanted to be basketball player or someone important in the future that is your prediction, dream or goal that your trying to reach, and the only way for that to come true is if you make that happen.