I am a trained scientist. I know a lot about quantum physics and it is weird [compared to everyday macroscopic experience]. I am not convinced in anti-gravity effects, but it is a field that both quacks and honest scientists have explored - and I believe it is a valid field of study as long as one keeps within the limits of science and avoids the quackery. I stumbled upon one of the better websites on this matter for the layman. There is math, but one need not understand it to understand the ideas expressed. It is clear and shows that some observed phenomenon have yet to be fully explained. Other possible explanations other than anti-gravity effects are possible, however. For those interested, take a look at this website: https://quantumantigravity.wordpress.com/study-guide/