If you are invited to a luncheon it will not be just you. This other group sounds like a group selling a product or service.
Many people have low back and nerve pain. It sounds like they are sending this invitation to many people hoping enough people with low back and nerve pain will respond.
Hope this helps.
> Many people have low back and nerve pain. It sounds like they are sending this invitation to many people hoping enough people with low back and nerve pain will respond. <
You just might be right, Balata. Something like half of adults complain of back pain, at least now and then. So a mass mailing would reel in quite a few fish.
Learner, it might be a good idea to talk to a few of your neighbors. See if any of them also received the invitation.