Baselines help us stay in touch with reality.
The first step in understanding how something is performing is to measure it as it is.
A baseline is the measurement of something before changing it. Without baselines, assumptions will likely lead us in the wrong direction.
Here are two examples:
- If a prominent department store saw quarterly profits increase by $1.5M after their Super Bowl ad, the ad may be seen as effective. But if the baseline of regular quarterly profit increase for this brand is typically $5.5M+ after a Super Bowl ad, we'd judge the ad differently.
- Imagine an elementary school is reporting test scores averaging in the C+ range for the majority of their students. This may seem unimpressive, or even worrisome, until our baseline is introduced: average test scores this time last year were a D+.
When we have a baseline, we can judge performance. Without that, we may mistake the ad as successful and the teachers as incapable.