Thank you for the link ~ !
Thank you for the advice. A quick google found :
"Name: Professor Fran De Aquino; Institution: Maranhao State University; Position: University professor; Location: S.Luis Brazil; Field of Science: Physics."
But even if he is at present an academic, to me that does not necessarily indicate any level of trustworthiness in intent or knowledge.
So alas I am back at Square One, remembering the question: What is the most useful and efficient use of my, unfortunately, all-too-limited supply of time and energy, while at the same time budgeting enough of same to manage good householder duties?