Biological computation supporting biological phenomena functionally practices the underlying quantum computation indexically, rather than symbolically. An advantage of the indexical operation of quantum computation rests upon a significant reduction of the computational complexity compared with the corresponding classical counterpart running exclusively upon the symbol manipulation. The reduction of the complexity is sought in allowing for the participation of multiple processors running concurrently in a parallel manner. The concurrent distribution of multiple processors operating mutually in an inseparable manner lets each processor regard the rest of the distribution as its own environment. The environment thus formed and detected by each processor may differ from the similar ones appropriated to the other individual participants nearby. Both the individual processor and the corresponding environment turn out to be agential. Quantum computation practiced indexically may serve as a precursor agency apt for both forming Jakob von Uexküll's umwelt towards the environment and making use of James J. Gibson's affordance from the environment. The individual environment to each material participant there is already indexically agential in pulling that participant in.

支持生物现象的生物计算在功能上以索引方式而不是符号方式实践底层的量子计算。与专门运行符号操作的相应经典对应物相比，量子计算的索引操作的优势在于计算复杂度的显着降低。在允许以并行方式同时运行的多个处理器的参与中寻求复杂性的降低。以不可分割的方式相互运行的多个处理器的并发分布让每个处理器将分布的其余部分视为自己的环境。每个处理器由此形成和检测到的环境可能与适用于附近其他个体参与者的类似环境不同。单个处理器和相应的环境都证明是代理的。以索引方式实践的量子计算可以作为一个先驱机构，既可以形成 Jakob von Uexküll 对环境的 umwelt，又可以利用 James J. Gibson 对环境的启示。每个重要参与者的个人环境已经在吸引该参与者方面具有指示性作用。