Holy cow, I wrote a book!
A customer noticed that when you right-click on
Computer in the second column of the Start menu
on Windows Vista, the first two options are
Open and Explore.
On the other hand, in Windows 7,
the Explore option is gone, leaving just Open.
The customer also noticed that
in Windows Vista, the two commands had the same effect
and wondered if Explore was removed because it was redundant.
The response from the product team was a very simple "Yes."
It's interesting when a customer notices
a relatively insignificant UI change,
figures out the likely reason for the change,
and then asks for confirmation.
It's not like the reason for the change affects anything.
My guess is that the customer already paid for a support contract
so they're just going to use it, even when the issue wouldn't
normally be worth raising a support incident over.