Behold! The complete dichotomy of business education captured in two complementary volumes! Buy both and you've basically acquired a Harvard MBA for £19.99 instead of $150,000.
It's like finding the unified theory of business knowledge through the power of contradictory book titles. The perfect set for impressing colleagues while simultaneously admitting you have no idea what you're doing.
Schrödinger would be proud - you can now simultaneously know and not know everything about business until someone opens the books and collapses the wave function of your expertise.