What is true or false is determined by reality.
Climate models are not reality they are imprecise naive numerical approximations of possible future realities filled with both known and unknown error.
You can measure it with within a given margin of error with science.
One can only measure the future after it has arrived.
The fact you have to answer the question and that you don’t understand the answer just means that you are unable to determine what is true or false. It doesn’t mean that the rest of us are unable to or that there isn’t a true or false
