Hi Ken,
This is a fantastic piece. The title is direct and to the point. The reader knows exactly what they will be getting out of the piece. I was intrigued about what was invented during the 20th Century and began to read to find out more. You launch into the piece without introduction or preamble. This takes all the reader's attention and focuses it completely on the topic and the piece. They will read to the last word. You have written a spoof about the inventions of the 20th Century. The reader is delighted with the look they get at you as a person as well as a writer. The length is perfect. You completely develop your topic without belaboring the issue and making the piece tedious. You use a light style that is very appealing to the reader. Great job.