1. We shall use natural units ħ=c=1. The metric isg μν=diag (+ + + −) 1.
2. This speculation concernsbare («unrenormalized», «undressed») masses. Also we mean observed «particles», whether they be elementary or composite.
3. For example, the gauge theories of unified weak, EM and strong forces in the last ten years.
4. Cf. «The Key to the Universe», a television broadcast co-produced by the BBC and WTTW, Chicago.
5. The credit for this idea and for the first solutions belongs toY. Murai.