I clicked through hoping this would be about physical objects... I've always wondered, if I leave a bike unchained and someone takes it, it's considered stealin

I clicked through hoping this would be about physical objects... I've always wondered, if I leave a bike unchained and someone takes it, it's considered stealing, right? But what about littering a box of cigarettes on the floor, and someone taking the last one in it, did that person just steal your cigarette? Totally off-topic, so I apologize, but I've always wanted to read into this topic a bit more...