Not exactly clear on the concept

[carbonel]

I'm flying to Chicago for Thanksgiving. My parents wanted me to come in today, so I'm flying on the busiest day of the year. When I went to do online checkin, I discovered my flight (United 3458) is delayed about an hour -- 5:45 instead of 4:42. All well and good. I called the taxi company and asked the driver to come an hour later than originally planned.

Then I got an automated e-mail from United, notifying me of the delay. But the e-mail also said: "Please be at the gate for boarding prior to the original scheduled departure time of 4:42 p.m., as the departure time could be revised again."

So I'm supposed to show up at the airport already knowing I'm going to have to sit around for an extra hour, on the off-chance that my late plane is less late than predicted?

Bleah.