Linked from
The 23 pages that link to Inclusive fitness, each with the reason it gives.
EusocialityRelated: It accounts for direct and indirect genetic contributions within colonies.
SociobiologyRelated: It explains how helping relatives can spread genes shared with them.
The Selfish GeneRelated: It explains how genes can spread through aid to genetic relatives.
Brood careRelated: It accounts for how care of relatives can be favored by selection.