"Two left" is very different to "There are two left." "Two left" could mean that two have up and left, or it could mean there are two remaining. And when it comes to moments of intense stress, such as Monarch Butterflies emerging from their chrysalis and taking to flight, it becomes critical to harmony that a messenger leaves no doubt in the mind of the message receiver. Otherwise confusion reigns and people get blamed.
It was Bertrand Russell, conscience objector, hero of the common man, he wasn't
big on God or wedding vows and he was the author of the classic History of
Western Philosophy, who briefly encouraged others to seek logic in language. It
was later in his life that he came to a conclusion that language was basically
without logic so better to pursue an understanding of Precision in Language.
Henceforth when around creatures and things that may or may not have left I will
endeavor to remember Bertrand Russell.