Boisjoly&#x27;s rebuttal is that<p>1) Tufte had temperature datapoints for the previous launches that the Boisjoly&#x27;s team didn&#x27;t know[1].  I assume &quot;know&quot; to mean the complete historical data wasn&#x27;t all consolidated conveniently at his fingertips <i>before</i> the disaster.  Presumably, Boisjoly&#x27;s team could have gotten it <i>if it had occurred to them</i> to gather it.  Essentially, Tufte had the benefit of &quot;hindsight&quot; to make his compelling diagram showing cause &amp; effect.<p>2) GIGO garbage in is garbage out.  The Tufte temperature datapoint assumes that the outside ambient temperature is equal to the O-ring temperature[2] so substituting one for the other is wrong. (E.g. It&#x27;s wrong to put them both on the same X-axis.)<p>Quotes excerpted from <a href="http:&#x2F;&#x2F;www.onlineethics.org&#x2F;CMS&#x2F;profpractice&#x2F;exempindex&#x2F;RB-intro&#x2F;RepMisrep.aspx" rel="nofollow">http:&#x2F;&#x2F;www.onlineethics.org&#x2F;CMS&#x2F;profpractice&#x2F;exempindex&#x2F;RB-i...</a>:<p>[1]<i>&quot;He thus supposes that they knew the temperatures at launch of all the shuttles and, assuming they acted voluntarily, infers they were incompetent.&quot;</i><p>[2]<i>&quot;, in addition, mixes O-ring temperatures and ambient air temperature as though the two were the same.&quot;</i>