Dont tell me what to do DT - you are not a moderator.
Similarly, not everyone is an engineer like you. You would do well to remember that and bear it in mind.
Furthermore, as Tom has been reminded before the usage of Google and archive threads that are still available that our Webmaster on here allows to happen means members can look up previous threads. It makes sense to look up what past members have posted. Respectively.
Tom has nearly been a member on this site for nearly a year. I don't expect members to know all, but he knows the nature of posts and threads having commented on others before.
Also it would appear that by the info he has written in his profile, he has been collecting vacuums for 8 years. I class that a long time. Maybe you don't.