We could measure the change in several objective metrics, such as:
Annual income (higher is better)
Time spent at work to achieve the same or greater level of income (lower is better, though of course this does not apply if one’s work is also one’s hobby)
Weight to Height ratio (closer to doctor-recommended values is better)
Number of non-preventative doctor visits per year (lower is better)
Number of scientific articles accepted for publication in major peer-reviewed journals (higher is better)
Number of satisfactory romantic relationships (higher is arguably better, unless one is not interested in romance at all)
Hours spent browsing the Web per week, excluding time spent on research, reading documentation, etc. (lower is better)
We could measure the change in several objective metrics, such as:
Annual income (higher is better)
Time spent at work to achieve the same or greater level of income (lower is better, though of course this does not apply if one’s work is also one’s hobby)
Weight to Height ratio (closer to doctor-recommended values is better)
Number of non-preventative doctor visits per year (lower is better)
Number of scientific articles accepted for publication in major peer-reviewed journals (higher is better)
Number of satisfactory romantic relationships (higher is arguably better, unless one is not interested in romance at all)
Hours spent browsing the Web per week, excluding time spent on research, reading documentation, etc. (lower is better)
The list is not exhaustive, obviously.