This apology was made in the mist of a light hearted talk with a Times newspaper reporter.
However, Berners Lee need not be unduly worried. Most modern web browsers assume the
http://part and prepend it to an address when a user type a web address.
Web browsers are getting more and more intelligent. For example, if you type a phrase in the address bar of Firefox, chances are it will display the results for the query in your default search engine (usually Google). More over, if it is a well known phrase associated with a particular website, then you may even be taken directly to that website.
[Source : BBC]