Many of the systems here are based on the last drawing. OK, makes sense.
But what gets confusing is when someone says somtehing like 'take the last drawing and go up and down 1, 2, 3', that produces a new number, but then they give an example where that number hit a few days later.
If they'd give instructions and then say 'play that for the next five draws' that would be one thing, but often they don't but just dig for results to prove the system.
So when the instructions are kind of vague is is draw by draw, or ?