In the example of Yahoo!, what would you consider to be the two most critical $(!)$ assumption$($s$)$ that should be checked to see whether there is sufficient evidence to support them?

True interactions and experiences are only possible in Yahoo!$$s offices.

Speed and quality are often sacrificed when people work from home.

Some of the best decisions and insights come from hallway and cafeteria discussions and meeting new people.

Being a Yahoo isn$$t just about employees' day$-$to$-$day job.

To be one Yahoo!, employees need to be physically together.