ory of kin selection in 1981 (JTB 88:103)=and Taylor and Frank did it a different way in 1996 (JTB 180:27). I added =ime delays to the Charlesworth- Charnov model in 1993 (Evollutionary Ecolog= 7:406). These models all grow out of the ideas that Hamilton introduced i= his "Moulding of senescence" paper i