Who was the idealist metaphysician that wrote an argument published as a journal article in Mind in 1908?
J. M. E. McTaggart: John McTaggart Ellis McTaggart, FBA, commonly John McTaggart or J. M. E. McTaggart ( ; 3 September 1866 – 18 January 1925), was an idealist metaphysician. The Unreality of Time:  In the argument, first published as a journal article in Mind in 1908, McTaggart argues that time is unreal because our descriptions of time are either contradictory, circular, or insufficient.
John McTaggart Ellis McTaggart