Why do we live?
$${\textit{In a tree model }}$$ $${\gamma}$$, $${\textit{at a multifurcation }}$$ $${i_{\alpha_{i - 1}}}$$, $${\textit{the selection of arc }}$$ $${\gamma_{\alpha_i i}}$$ $${\textit{can be important locally, such as in the scenario where th