You may not know the term ‘Gish gallop‘ but you’ve seen it in action if you have watched any Donald Trump performance. It is a firehose of lies and disinformation employed to sow chaos rather than educate. It is dishonorable. The technique is named for creationist Duane Gish who used it in his debates with biologists. His tactic consisted of talking fast and with confidence, bombarding opponents with falsehoods, non-sequiturs and enough cherry-picked factoids to confuse the audience. Scientists debating him faced the challenge of sifting half-truths from outright lies and finding the right evi…