Tomatoes Are Vegetables!
Nice try. Tomatoes, under botanical classification, are fruits. The U.S. Supreme Court might classify them as a vegetable, but this is ONE situation where the wit and charm of a bunch of very dour people in black robes isn't the final say.
So what you're saying is that you always have to go when around jellyfish.
radar DOES NOT DEPEND on sight - you dont "see" except on your screen - radar is based on "sound" NOT "sight" - day or night - radar works.