Growth is easy to measure, but durability isn't. Those who succumb to measurement mania obsess about weekly active user statistics, monthly revenue targets, and quarterly earnings reports. However, you can hit those numbers and still overlook deeper, harder-to-measure problems that threaten the future viability of your business. If you focus on near-term growth above all else, you miss the important question you should be asking: will this business still be around a decade from now? Numbers alone won't tell you the answer."