by David W. Sirkin

This website contains essays and handouts I have written about various topics that interest me.

Disclaimer: I generally write without doing extensive or systematic research.  While I do not deliberately state falsehoods, there may be factual errors.  Similarly, while I do not steal ideas from others and present them as original, I may unkowingly have an idea or make a discovery that someone else has already had or made.  If you find any errors here or find any of my new ideas or discoveries to be not so new, I would be grateful if you would let me know.

Special disclaimer for health or medical essays and handouts:  Nothing from this website should be considered as medical advice.  Please consult your doctor before acting on any information obtained from this site.