What are the reasons for using the latest version?

[jseanj]

def resolve_activated_specs
        activated.vertices.each do |_, vertex|
          next unless vertex.payload

          latest_version = vertex.payload.possibilities.reverse_each.find do |possibility|
            vertex.requirements.all? { |req| requirement_satisfied_by?(req, activated, possibility) }
          end

          activated.set_payload(vertex.name, latest_version)
        end
        activated.freeze
end

I found that in the resolving dependency, the latest version is returned. What are the reasons for using the latest version?
If I want to use a minimum version that meets the conditions, what should I do?