Quick tips

• Read before you tap. A half-second of reading saves a life: is it broken, or just unusual?
• Know the classics. NaN, null, undefined, {name}, impossible dates and prices: those are always bugs.
• States are features. Empty, loading, offline, sold out: apps have states, and showing them is correct.
• Protect the combo. A wrong tap resets your combo. Accuracy beats speed in the long run.