What you think random means
Weird, unpredictable, or bizarre. Usually you mean to say stupid when you say random. Example "Yeah I'm just so random all the time! lol lol i like pie"
What random actually means
An event completely unaffected by anything. Without looking at the deck, please take a card at random. We're going to let the game use its algorithms and equations and stuff to select a stage at pseudo-random.
I really don't know if a random occurrence could exist. Scientifically, everything is affected by something somewhere along the lines. Spiritually, everything happens for a reason. Say I jabbed at my keyboard without looking and hit G. Well, why did I hit G? Was it random? Not really, the position and movements of my hand determined that I'd hit G.
That's all.