So you believe everything is random?
Nothing is accidental.."small causes can have larger effects".
I could still accidentally break a vase, the owner of the vase gets mad at me and I might then take out my frustration on someone else who had a breaking point and commits suicide.
Still started with an accident, don't care how metaphysical you want to get. It wasn't intentional and therefore it was an accident.
Sì, but you say ''Nothing is accidental'' which, and I might be incorrect cause its late here, implies that you assume a creator. Cause if there's purpose, then that purpose must be given by some conscious entity. If ''Nothing is accidental'' then there's reason.
Butterfly effect demonstrates nothing more than how perceivably unrelated events can be related, but perceivably doesn't mean it was intentional or with reason, it just means that we didn't make the connection before. Someone knocking over a vase and that results into a suicide is butterfly effect indeed but it doesn't proof reason or intent.