What’s unusual (discounting the eccentric wording) about this paragraph, composed by Lawrence Cowan?

Trade was arrested as a base act after federated reserves regressed faster as extracted free trade was saved as extra reverted waste. Deserted as better fates were created, a few brave castes feared effects as excess stargazers were severed. Statecraft fretted, staggered, braced as steadfast braggarts beat state stewards, stewardesses. Tested as a great craze, trade traversed war; zest was dead as a few eager asses abated better treats, detested street fracases. Facts were effaced as we attested a great faded age.

I quickly noticed the only vowels were 'A' and 'E'.  But the text still seemed too contrived with that allowance.  Then I saw it - there were no occurrences of the letter 'N' or 'L', two of the most common consonants. Anybody familiar with the Wheel of Fortune will know "R,S,T,L,N,E". 

Posted by Brian Smith on 2016-08-24 11:19:28