The video discusses how smartphones replaced multiple devices by focusing on function over form, serving as a model for energy efficiency. It suggests rethinking energy use by focusing on desired outcomes, like staying warm or efficient transportation, rather than improving individual devices. This approach can lead to significant energy savings and innovative solutions.

How did the introduction of smartphones change the way we think about essential devices?

In what way can the smartphone story serve as a model for addressing climate change?

What is the main approach to design that smartphones represent?

What alternative approach to energy efficiency is suggested instead of focusing on individual devices?

How can rethinking transportation contribute to energy efficiency according to the text?