Ways of meeting needs vary across stages of the lifecycle, relationships, and historical time. Across the lifecycle, needs change, relationships change, and cultures may change. Across historical time, there have been many changes in ways of meeting needs, due to changes in means of communication, transportation, and production. There have also been historical changes in worldviews, including religions, philosophies, science, and education more generally. Historical changes in cultures cause changes in lifestyles, such as technology changes that impact how people work and how they interact. The result is that generations have different experiences growing up. During the COVID-19 pandemic, some positive feelings often decreased, such as happiness and life satisfaction, but other positive feelings often increased, such as feeling gratitude and feeling loved.