Well, I wouldn&#x27;t say I rediscovered it. I knew it was old. Sorry if I had given the wrong impression! My references section[1] includes citations going back to at least 2000, but the technique is certainly older than that. (I&#x27;m not so sure the algorithm for construction presented in the article is older though. As far as I know, it was a novel result for Daciuk, Mihov and Watson in 2000.)<p>[1] - <a href="http:&#x2F;&#x2F;blog.burntsushi.net&#x2F;transducers&#x2F;#references" rel="nofollow">http:&#x2F;&#x2F;blog.burntsushi.net&#x2F;transducers&#x2F;#references</a>