What are the differences between a top-down and bottom-up approach in problem-solving and decision-making processes?

A top-down approach starts with a broad perspective and breaks it down into smaller details, while a bottom-up approach begins with specific details and builds up to a broader perspective. Top-down is more strategic and efficient, while bottom-up is more detailed and thorough. Both approaches have their strengths and weaknesses, and the best approach depends on the specific situation.