We know but it's an option between 'this article/paper/page looks interesting but I'm doing something else so I'll leave it open a come back to it maybe'

And adding everything you don't immediately read to bookmarks leads to having 100(0)+ bookmarks drowning out the useful ones and they still have almost the same chance as being read as an old open tab( personally I like to DL full webpages when clearing down tabs and see something interesting but that I'm not going consume right then and there, but that doesn't always capture all the media but at least you have a record, and reference to look it back up)