Armstrong is a scammer. I recently reviewed one of his articles where he claims that his cycles can predict earthquakes. His claims in that article are demonstrably wrong. It is so wrong and misleading that he looses all credibility, and I would have no confidence in his economic predictions. 

Please find it on reddit or follow the link below:

https://www.reddit.com/r/aec/comments/e8jvja/review_of_climate_change_earthquakes_caused_by/

I urge you to demand evidence, and be skeptical.