Why using the right instruments is critical?
The history of science clearly shows that new instruments always "expanded" our view of reality, the telescope, the microscope gave us a more wide view of reality, the same had been with the many wonderful instruments used today in modern science.
But we also can look at that from another angle, reality is very rich, beyond the wildest imagination, our senses give us a very limited view of reality, that limitation had lead us to have a limited and narrow view of reality, new instruments had widened that view, but that is a never ending process.
The continual use of limited instruments always lead to have a limited view of reality.
We see that clearly in some observers that had used always low optical magnification equipment. By using low optical magnification equipment they had been unable to resolve the structure details of the objects under observation, since almost all of these observers have preconceptions about the nature of what they had been observing they had filled the lack of information in their recordings with these preconceptions, reinforcing them.
Some of these observers that always had used very limited instruments are now then between the main deniers of the reality of anomalies, we had seen that here in first row.
But instruments are always limited by definition, so using the same instruments for too long will always lead to the same situation of filling the lack of information with conscious or unconscious preconceptions, we have to be very aware of that.