But I don't know many people who think that we need to spend all our time tackling the world's biggest problems.
It's hard to see what the point of such a thing would even be. Isn't the whole point of solving the world's problems that we'll have more time to waste on frivolous pursuits like the Yo app?
Also, this attitude is an example of the well-debunked fallacy that time and effort are fungible and/or exchangeable goods (i.e. that the creators of Yo could just as easily have been solving more difficult problems instead).
It's hard to see what the point of such a thing would even be. Isn't the whole point of solving the world's problems that we'll have more time to waste on frivolous pursuits like the Yo app?