This is true for ongoing events, a continual process in the here and now we can point our devices at and look at them, but many of the things we are dealing with are singular points in time events, leaving behind ongoing processes. Which made that talk on evidence from someone whose life was dedicated to looking at those types of events by gathering all of the facts surrounding (cold case murders) and finding the murderer. Predictions can be made once we have a greater understanding of what we are looking at, even design due to our abilities to design things we can tell what to look for in life that allows specific tasks to be done.
Engineering
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"Science isn't something you can point a telescope at" - perhaps not a telescope but a microscope most certainly!
The scientific method is self-scrutinising in a way that you don't find in any other area of propositional belief. Once an hypothesis is shown to be false, it's scrapped without sentiment.
And most importantly, scientific theories make predictions about the way natural systems work.