If I measure the temperature of some lava as it erupts, I will get a certain result. Anyone else measuring the same lava will get the same result. If I measure the diameter of an impact crater, I will get a certain result. Anyone else measuring that same crater will get the same result. If I measure the speed of a bird flying through the air, I will get a certain result. If someone else measures the same bird, they will get the same result.
It is impossible for me to measure the lava at 1000 degrees and someone else measures the lava at 200 degrees. It is impossible for me to measure the crater's diameter at 100 kilometers and someone else measures the crater at three meters. It is impossible for me to measure the bird flying at 70 kilometers an hour and someone else measures the bird at 10 kilometers an hour.
If the results are not consistent, then we have no way of knowing which of the results is correct. We can't even know that any of the results are correct. Any method that does not produce consistent results is absolute garbage. It is worthless and should not be relied on.
Yes the scientific measure is designed to measure the perceived material world. But that's all its good for.
But there's another layer of knowledge and its not material yet its just as important as the measure of material things. Our experiences and beliefs can also reveal knowledge about the world. Like Indigenous knowledge which has been around for thousands of years well before material science came along.
We can gain new knowledge through experience. We can know all the mechanisms and measures of music for example even a deaf person can understand this. But if someone deaf has never heard Mozart's Requiem and then was able to experience the joy and exhilaration of it for the first time they would have gained new knowledge they had never had before.
Yet the experience of joy and exhilaration are non material and non-reducible to mechanisms. This experience is every bit as real and relevant to reality as any material thing.
We don't see the world as material objects. We first see objects like mountains and lava as abstract representations of meaning. That's how we map the world out. So measuring how hot or cold lava is only has representation because of a mental concept we attach to it. That's all down to conscious experiences.
Its the abstract concepts we attach to the material world through our experience and embodiment of it that makes reality and without this objects are 'well' just objects. If humans are only reduced to material objects themselves then there is no meaning and measuring lava and earthquakes is irrelevant.
We cannot remove ourselves from the equation of how we see the world so it seems its our conscious subject experience which makes the best measure of reality. Sure science is very useful for working with the world in a mechanistic and material way but that's only part of the picture of reality.
The problem is many make science the whole picture and claim science also tells us what reality is which is stepping beyond what science can do.
When the subjective experience of lots of different people ALL point to the same result, it indicates that they are perceiving some aspect of objective reality. Can your alternative method of investigation say the same thing? Why should we accept it as accurate if it is always different for different people?
Like I said I don' dispute science. I am saying it has its limits and there's a lot to reality that falls outside it that's every bit as important if not more to how we understand reality.
In fact even science is pointing to the material world being some interface that we create to make it comprehensible but is an illusion that represents some fundamentally non-material remembering that what we think is objective reality is actually 99.999% empty space.