It’s a shame, then, that the second part of Pauling’s advice tends to be overlooked: “Most of (your ideas) will be wrong, and what you have to learn is which ones to throw away.” It’s certainly true that most ideas written on a Post-It note or submitted to an online system never get used, but the reason has more to do with a bias toward short-term payback in most innovation processes than informed filtration
Base on the question where as asking to complete the passage and base on my research and further investigation, One of the way to develop a main idea for the advertisement is to conduct product research. I hope you are satisfied with my answer and feel free to ask for more if you have question and further clarification
Bungle means to mess up. sometimes used with people who have butterfingers (slippery fingers, drop lots of stuff)
a sentence
'Don't bungle it up this time.'