I've been trying to not pick the oranges until I know they're ripe because they are too acidic for my stomach to handle. Yesterday I found one that was going rotten. I decided if they give when you press with the tips of your fingers, they aren't going to get much better and picked the rotten one and two others. I tried to prepare the overripe one but ended up tossing it.
If you like photography--or just a window into the past since photography was invented--you gotta' check out the Shorpy site (Shorpy Old Photos | Photo Sharing | Framed Prints ). Greatest photographic collection ever to capture the American Experience from the 1850s to 1960 IMHO. Love the clarity.