The author himself notes in the book's acknowledgements that he was warned that for every equation in the book, the readership would be halved, hence it includes only a single equation: E = mc2.
Autor poznamenáva, že ho editor varoval, že po každej rovnici v knihe by v čítaní pokračovala iba polovica čitateľov, a preto obsahuje len jednoduchú rovnicu: E=mc².