In Montreal Light, Heat & Power Co. v. Quebec (Attorney - General)(1908), 41 S.C.R. 116 at 132, Idington J. said «I refuse to accept unless absolutely necessary the mere ipse dixit of any expert when presented for my acceptance merely as an act of faith, and without the aid of such reasons as his reasoning power, or means of, and result of the use of means of, observations may have developed». (bc-injury-law.com)
Joiner has likely made this task more difficult by instructing trial judges that neither Daubert nor the Federal Rules of Evidence «requires a district court to admit opinion evidence which is connected to existing data only by the ipse dixit of the expert. (aaas.org)
Manifestum est ergo, quia homines dixit deos, ex gratia sua deificatos, non de substantia sua natos. (faith.org.uk)