Especially if the new activity does not involve more than at least the next few years of teaching and research work? How much to consider such a proposal can affect the change in the amount of wages? Is there such a "coefficient of unconditional acceptance" for this kind of proposal? Five times more? Ten times more? Twenty times more? Given that the proposed work: a) understandable, b) legal, c) interesting professionally, d) is in the competence of such a professor, e) is offered in the same city? And what are the internal reasons for rejecting such an offer? For example, in the case of a tenfold change in the amount of annual income compared to work at the university?