There is a very high-level principle that says that something and its opposite can not exist at the same time. Smith can't be alive and dead at the same time.
Any science that claims that a "cat" can be alive and dead at the same time is invalid.
Particle physics is not a true science.
Good grief ...
"There is a very high-level principle that says that something and its opposite can not exist at the same time." Nonsense.
The principle you might mean to invoke is better stated as "A thing may not both be and NOT be at the same time." You illustrate this in your next sentenced quite clearly.
"Any science that claims that a "cat" can be alive and dead at the same time is invalid." Again, nonsense.
NO 'science' claims this. Schroedinger used this imagery to illustrate a 'thought experiment' concerning the emerging model of Quantum Physics. ( N.B. No actual cats were harmed during the production and discussion of this model. )
To proceed from these defective premises to the conclusion that 'particle physics is not a true science' is simple evidence of deficient reasoning.
The cat thing is more of a mental exercise to help people understand quantum mechanics, since so much of it is counter-intuitive.
There is a very high-level principle that says that something and its opposite can not exist at the same time. Smith can't be alive and dead at the same time.
Any science that claims that a "cat" can be alive and dead at the same time is invalid.
Particle physics is not a true science.
Oh I am not so sure about that.
I have heard rumors about men that are married and happy at the same time. Just because I have never seen it doesn't mean it isn't true.