If the useraccount is logged into the computer under which the task is run, you will be able to see the task running. Good for debugging purposes.

Doc: Totally agree with you that it might not be prudent to run this in a larger domain. However, one can always beef up the patch distribution by implementing some kind of load-balancing, e.g. pulling the patch form the logon server that has ben used to validate the user account.
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There are two types of vessels, submarines and targets.