...And just to be clear "observation" is almost not even a part of science at all. Experiment is paramount. Our science can be characterized as observation > experiment but this is merely to differentiate it from ancient science that was observation > logic.
Clearly, you still don’t understand at all.
Logic alone isn’t enough in science, because not everyone think or reason the same ways, and people can make mistakes.
That’s why with modern physical sciences and natural sciences, it require the mean of testing the explanations, testing the logic (logic also include maths, eg equations, variables, constants), testing the predictions.
And the only mean of testing in science, is through observations.
Observations include discovering evidence through experimentations or through fieldworks.
Experiments are conducted in controlled environments, like in laboratories, but not all evidence can be discovered in the labs. Other evidence required going out in the field, to physically find them.
Observation mean the following:
- the ability to observe, directly or indirectly;
- the ability to quantify (eg counting);
- the ability to measure (eg measuring mass, volume, spatial dimensions, temporal dimension (eg time), speed, voltage, current, power, energy, etc);
- the ability to test (eg comparing an evidence against other evidence, or verifying/refuting, etc)
Observations don’t just mean looking with eyes, because some things in life cannot be seen with the eyes, that’s why we use devices, equipment or tools to assist with observations, whether we use the microscope, telescope, multimeter, oscillator, mass spectrometer, etc.
Observations is also not just about looking, but also about counting, measuring, comparing, etc, so any measurement and any quantity are recorded and compared as DATA.
Data that can gleamed from the evidence, will allow scientists, researchers or engineers, to help determine if the evidence support/verify or refute/debunk any statement or model.
Evidence and data can provide the necessary information if the model (eg hypothesis or theory) is science or not science.
OBSERVATIONS = EVIDENCE
Don’t get me wrong, cladking, logic is useful in science, but logic WITHOUT OBSERVATIONS, isn’t science.
What you don’t seem to understand is that experiments are form of observations. You cannot do experiments, without observing.