What a coincidence!!

IMHO I should have informed everyone I've changed my email account, and I've expected that all the mail would be sent to my new one - now it looks like not quite true. At least, Peter, my professor, sent email to my ex-mailbox several days ago which I didn't check it until now. Anyway, I borrowed several books from campus library this week (Tuesday or Wednesday, I think) as a reference of my gastro-intestinal pathogens list. So what does this do with the email mentioned above? I checked my ex-mailbox just now (which is a once-a-week job) and realized that Peter had sent me an email, which informs me that "there is a new book 'Medical Microbiology' in the library that may be interest of you". In fact, this is exactly one of the books I borrowed JUST BEFORE Peter mailed me this book information, whereas I didn't know he'd sent the information about it until now!! That's definitely a coincidence eh!!