I enjoyed your nutritional synopsis of vegertables and garden plants
and found your hotlink to ' Nigella Sativa (black cumin, Roman coriander, etc.)' quite interesting and medically informative.
Many people think that because they have seed for garden vegetables, that they are protected from famine... not true !
However, most don't realize that the seed that they have saved from 'store bought' vegetables is hybridized seed and won't be true when replanted.
Heirloom seeds on the other hand are tried, true, and have a history of sustainability, having been handed down for many generations.
That is why long-term seed canned storage has heirloom seeds, only; they have adapted to many plant diseases, blight, drought, and drowning.
That is why you should include heirloom seeds in your prepper storage plans.
And that is why I only grow heirlooms.