You can only succeed when people are communicating, not just from the top down, but in complete interchange. Communication comes from fighting off my ego and listening.
Bill WalshThe dash helps to indicate that the two thoughts are intimately related, and it's less stodgy than a semicolon, which would have performed the same function (and who talks in semicolons?).
Bill WalshOn occasion I omit commas. On occasion, I use them. (The more you know about English, the less you're likely to think there are unbreakable "rules" for a lot of these things.)
Bill Walsh