Exchange Server was initially Microsoft's internal mail server. The first version of Exchange Server to be published outside Microsoft was Exchange Server 4.0. Exchange initially used the X.400 directory service but switched to Active Directory later. Versions 4.0 and 5.0 came bundled with an email client called Microsoft Exchange Client.
Definition of pareidolia in the English dictionary. The definition of pareidolia in the dictionary is the imagined perception of a pattern or meaning where it does not actually exist, as in considering the moon to have human features.
Facial pareidolia, is the phenomenon of seeing faces in inanimate objects. Psychologists say some are more likely than others to experience. Prof Kang Lee from the University of Toronto studied on facial pareidolia. Says not a sign of madness but a well-wired brain.