B-to-B marketers continue to improve their journey of ROI measurement as marketing becomes more accountable at the executive level for a quantifiable impact on revenues.
In science, the Uncertainty Principle says that you cannot precisely measure anything past a certain level of precision because the mere act of observing distorts the object of the measurement.
They quantify your stress level by calculating your heart rate and the minute variations in the time between each beat, a measurement known as heart rate variability (HRV), which has been used to gauge the likelihood of mortality after a heart attack and to help assess certain psychiatric conditions.