How Each New Skill Multiplies the Power of Every Other One. The modern world doesn’t reward what we know; it rewards what we can combine. In the past, career success was often viewed as a linear progression. Education led to expertise, and expertise led to stability. Today, stability is an illusion. The shelf life of a skill has shrunk from decades to years, and sometimes to mere months.   To thrive in this accelerated environment, learning cannot be additive; it must be tran