The double slit experiment is based on the wave/particle duality of subatomic particles. What is so amazing about it is that over the years it has produced results that are among the strangest in quantum mechanics. It is the king of quantum weirdness being the strangest in science. The original double silt experiment used photons of light, but later versions used electrons but the results are the same The double slit experiment is actually responsible for starting Quantum Physics.
Over the decades numerous explanations have been proposed to explain the results of what on the surface is a very simple experiment. However resent experiments involving quantum erasure seem to have reduced the possibilities to being the information that is collected making the difference.
What seem to be happening is the in general subatomic particles tend to exist as wave functions that represent multiple possibilities. When specific information is measured about an event those possibilities are reduced to one producing the needed information. A new wave function of multiple possibilities is then produced consistent with that one possibility.
Putting it all together suggests that what we call reality is actually immaterial at its most fundamental level. At its most fundamental level the universe seems to be composed entirely of information. This makes it more like a sophisticated computer program than a world of material objects.
It is more than just the existence of the information the affects the experiment but its ability of it to eventually be accessed by the experimenter. That experimenter is ultimately a human being that is a conscience entity. The information that makes up reality seems to be calculated as need for a conscience entity so as to produce a consistent reality.
This shows that consciousness is a fundamental part of reality. This is not new age thought but what the observation of subatomic particles is actually telling us. It is consistent with the Biblical view of God as creator since the universe would be a result of His consciousness. It is also consistent with the Biblical view of God creating the Universe out of nothing.