Strictly from a mathematics perspective, there is no difference between the notions of “the glass is half full” and “the glass is half empty.”
To most people, these two statements represent totally different meanings, as well as their consequences.
Peter Drucker believed if general perception changes from seeing the glass as “half full” to seeing it as “half empty,” there are major innovative opportunities.
When a change in perception takes place, the facts do not change. However, their meaning does.
Drucker used the example of the change in American health awareness and in the corresponding values.
Five or six decades ago even minor improvements in the nation’s health were seen as major steps forward. Now dramatic improvements are barely paid attention to.
This change in perception has created a vast market for new health-care magazines, alternative sources of medicine, physical fitness centers, and other “wellness” goods and services.
Drucker taught us to identify or define a major change in perception influencing your industry. Exploit this change to your advantage.