whether it’s academic or business, you know how much time it requires to prepare for. This includes generating a list of anticipated questions, which might be asked in different ways. For a presidential debate, the topics that are expected to be covered are not that hard to foresee. Immigration, borders, inflation, jobs, crime rate, Roe v Wade, J6, past policy legacies or failures … really not that hard to imagine. Again the question can be asked in different ways. But a good preparation can largely make sure the delivery of good answers. Also in a debate like this, you would need to have tactics to attack or bait your opponent. This is called preparation. In my opinion trump was not well prepared. Harris was. For this the blame is on Trump himself.