Basic Demands Of Islam
I don’t know what you mean by “things”. The matter of knowledge is not the matter of speculations. For example, if I need to know what kind of illness one has, I need to investigate his aliment with medical knowledge. If I can’t find the information, I can speculate but with no certainty. So think there can be a God is logical, but to believe that there is one who works in certain ways and demands in certain ways, need information or knowledge from Him. No speculation works here.