Probably the most important thing in forecasting is the ability to ask: What if something is not how you think it is? Open speculation on world developments is the key to establishing a position, where basically nothing can really surprise you. And at that point, you have come so far as a forecaster.
The first two are rather political, but as I mentioned before, politics has become a major factor affecting the global economy. That is why the questions need to be addressed and, perhaps, speculated upon.
Due to the Ukraine–Russia war, Europe may be facing its darkest winter since 1945. Our economic systems and societies are unlikely to be able to withstand major energy and possible food crises combined with interest rate hikes. Due to sanctions and central bank policies, we could be facing the deepest economic crisis since World War II, which also would make primarily Europeans a lot poorer.
This is because if any of them (not to mention several not discussed above) turn out to be true, we are living in a very different world that has been presented to us.