How do you determine if something exists?
Some claim existence is predicated upon experience. That is, you must see it, taste it, hear it, smell it, touch it, or measure it (some add freeze it), to prove that something exists.
That might be true – those might be the limitations of proof of existence, but if you can’t prove something exists, does that mean it doesn’t?
Are numbers real? Is my soul real? Is God real? How do you know?
What makes you believe that something – anything – is real?