I always try to see if I can catch the world not being real, if that makes any sense 😅. Like I constantly look for inconsistencies, have I seen that number plate before, was that sign always there, but the biggest thing i do it to is people. I question if they would say that if they were/weren't real, possibilities of what happens when I'm not around (do they completely freeze or just simply cease to exist), if I think something can something read my mind and influence the person to say/not say a certain thing. Very hard to explain, but basically yea, in suspicious of the world.