Planing something out as you go, Thinking about the end result and not the plan ahead of time
Jack Sparrow is a haphazard person
To do something without order or planning, or to seem random. Easily remembered because it sounds and is basically the same as half-assed.
His room seemed haphazard with the clothes scattered everywhere.
meaning random chance
or a variety
mere chance; accident; fortuity
not planned; random
by chance; casually
Throughout, he shows how only evolution, haphazard and undirected, could have produced the minds we humans have.