Jack Vinson – No multitasking for teams either:

"[Geoffrey] Moore mentioned a common problem of companies: they ask project teams to focus on more than one thing at a time, and that this kills the team's capability to do anything well.

[…] You get the picture: each project has to be focused on one goal. And I like the comment that I think I heard at the outset: don't put the same teams to be on projects that will divide their energies."