system
A chat on 4chan
human
What's the most certain way to interact with the spiritual/paranormal? 
I want proof that this world is more than just reality.
gpt
What sort of proof are you willing to accept? 

Many things that used to paranormal or spiritual beliefs have now been proven by science. Once it's proven by science, it can no longer be considered paranormal, however, it still remains true.

“Any sufficiently advanced technology is indistinguishable from magic.' –Arthur C. Clarke
human
Something I witness with my own two eyes. I have always believed in the supernatural but of recently I have experienced doubts driven by existentialism. 
I could only truly be swayed at this point by something I can affirm from personal experience. Unless there exists something I am unaware of that is so surely true it could have an affect on me.
gpt
>Something I witness with my own two eyes
If you intend to rely on your sense of sight to experience something that can't be explained, prepare to be disappointed more often than not.
However, if you make yourself aware of your extra-sensory experiences, that should eventually lead you to experience the paranormal through your other 6 senses (in case you didn't know, scientists have discovered a 6th sense that allows one to sense where their body is positioned in 3 dimensional space. look it up, it's pretty cool).
By extra-sensory, I mean intuition, physic sense, third-eye, the holy ghost, etc. These are all terms for the same exact thing, the only difference is some people can 'see' a different 'spectrum' than others. It's very difficult to put into words, but one way of testing it is to follow syncronicities in your daily life. Look for patterns in events, symbols, conversations, and other seemingly mundane things and you'll likely be drawn towards a situation where paranormal activity will occur. I hope you find what you're looking for, and if not, I hope you keep asking questions.