Imagination, however does not have such limits, we can imagine anything, whether it is an imaginary tree or an alien in a UFO. Books are written, imagining other worlds, impossible physics, monsters, ghosts, miracles and so on and on. We can speculate without limit on “solutions” about non-existing phenomena and about things we still do not understand but they have no real value until we have some realistic evidence that there is some truth to these speculations. Sometimes we find that evidence, sometimes the evidence is contradictory and then we must adjust our speculation accordingly. If we accumulate more evidence, the speculation can become a theory and some theories accumulate so much observable evidence that they become facts, even if these facts later need finer adjustments when more knowledge accumulates.
Imagination with no evidence is of course great as a thought experiment and is unlimited but not proof of anything. Conclusions drawn from an imaginary condition is tempting but has no value. When, without any evidence, we conclude that since we observe thunder and lighting there must be a god “Thor” throwing his hammer into the sky, there is no connection between the observation and the imaginary cause. The same goes for the “argument that the universe is so complicated, fine tuned and large that there must be a creator. Here again there is no connection between an observable fact and the speculation of its cause.
When writing became invented, many of these imaginary guesses were written down. Based on later observations some were found to point in the right direction. Some needed to be disregarded but were not. We now know the world is round and not flat as deduced from earlier observations. We must adjust with new findings.
Speculation about the existence of a Deity is pure imagination. No observable facts. Instead the current knowledge point in the direction of random events being the case. Prayers being heard some times and sometimes not , the miracle healings which sometimes occurs to religious and non-religious people, are proof of random events., good luck or bad luck! We should rely on human knowledge and painfully acquired experience through trial and error. No cancer cure was “coded “ in the Bible as some want to make us believe. Imagining the supernatural is an easy way out which creates more problems and delays the progress of our continues search for true answers by pretending that we have already all the answers.
Imagination is important and has its place because it does starts our thinking “outside the Box” of our five direct senses but we must reject those which show no observable evidence.