For the second example
Why do you think it shouldn't work? and I can try to explain from there
Thank you for both replies.
For the second one, I thought it would be 'wait 8 seconds then create the sprite, then wait 4 seconds to release the sprite, then repeat'. I only tried it to prove to myself that my theory wouldn't do what I wanted it to do.
The other reason I don't know why it worked is because I have no idea how a sub-condition without the condition works.
My train of thought literally went like this: I'll try a sub-condition. Which sub-condition? I don't know. I'll make a sub-condition, move the speed and angle into it and Then I'll figure out what I should put as the sub-condition. Mmmm I wonder what this will do if I click play.
That is how I got to this point - dumb luck. lol