I am enraged by people using the word "efficiency"

If you look at the blog “Learn to work”, you can make sure that the words “effective” and “efficiency” are found there in every first paragraph. Meanwhile, the speakers prefer not to think about the meaning of the word “effective”.

Yandex.Dictionaries , as well as ordinary logic, suggest something like the following:

EFFICIENCY is one of the most general economic concepts that do not yet have, apparently, a single universally accepted definition. In our opinion, this is one of the possible (most important, but not the only!) Quality characteristics of some system, in particular, economic, namely its characteristic in terms of cost-performance of the system. Depending on what costs and especially what results are taken into account, we can talk about economic, socio-economic, institutional, social, environmental E. However, the boundaries between these concepts are vague and there are active discussions around them.

In short, efficiency == optimality in a sense. The word “effective” in itself makes sense ONLY when indicating which objective function is being optimized. The use of this word without indicating the context indicates that the author simply uses the buzzword to give his concept more weight, and nothing more. Of course, if it’s not about physics or mate. statistics says).