OK. The plot thickens. https://www.phrases.org.uk/meanings/big-fleas-have-little-fl... so .. this is the phrase I remember. Probably the "motto" used by the SF author. Now I remember Peace on earth... and BTW à propos the article cited .. the spy bugs there have very partial vision .. and if I remember correctly they recompose scenes from the multitude of images... I think this is as far as I am going to get. Thank you!