Over time there's been tons of research, studies, theories, etc. done and proposed. There are some things we know now through research that at the time probably had laypeople wondering why they'd even bother. Some of those ideas may have had the same reaction from the scientific community only to later prove to be quite useful. What have you heard about recently from the scientific community (or R&D) that comes across as a rather bizarre thing to waste time on? If there's something rather interesting from the past that has proven useful today that'd be fine to post as well. I'll post something on the subject probably tomorrow.