Postphenomenological studies have explored technological mediation between the human body and the world by analysing the bodily experience of the world. Applying this analytical perspective to predictive technology requires some expansions because humans cannot directly experience the future world. I conceptualize pre-spectival focus, which refers to how human attention is directed to the making-future-present process, and which features or aspects of its process are foregrounded or backgrounded. Through the concept of pre-spectival focus and actor-network theory (ANT), this article examines the case of System for the Prediction of Environmental Emergency Dose Information (SPEEDI), a Japanese technology used to simulate the atmospheric dispersion of radionuclides released from nuclear reactors. SPEEDI provides prediction maps representing radiological consequences and was expected to support evacuation decisions during nuclear emergencies. However, this was not the case with the Fukushima disaster, which led to a socio-technical controversy regarding SPEEDI's usage. Based on bibliographic surveys and several interviews, I encapsulate four multistable uses of SPEEDI: prediction as supporting advice, prediction as a tool for evacuation drills, prediction as self-protection, and prediction as a source of misunderstanding. Relevant actors perceive the predictions of a nuclear disaster in each stability depending on the diversity of their pre-spectival foci, which is also related to the forms of life nourished through their professional and daily lives. A distinct rivalry can be observed between the two actor-networks around nuclear emergency management in which SPEEDI is differently enrolled: the social control network and self-determination network. In the former, the residents are constituted as passive selves who obediently follow governmental instructions; in the latter, residents are included as autonomous subjects who can actively decide protective actions. Moreover, I discuss future postphenomenology-ANT studies on predictive technologies based on these analyses.

中文翻译：

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核灾难预测技术的多稳定性。

后现象学研究通过分析世界的身体体验来探索人体与世界之间的技术中介。将这种分析视角应用于预测技术需要一些扩展，因为人类无法直接体验未来世界。我将前观焦点概念化，它指的是人类的注意力如何被引导到创造未来的当下过程，以及其过程的哪些特征或方面是前景或背景。本文通过前视角聚焦和行动者网络理论（ANT）的概念，研究了环境紧急剂量信息预测系统（SPEEDI）的案例，这是一项日本技术，用于模拟核释放的放射性核素在大气中的扩散反应堆。SPEEDI 提供代表放射学后果的预测图，预计将支持核紧急情况期间的疏散决策。然而，福岛灾难的情况并非如此，这引发了有关 SPEEDI 使用的社会技术争议。基于文献调查和几次访谈，我概括了 SPEEDI 的四种多稳定用途：预测作为支持建议、预测作为疏散演习的工具、预测作为自我保护以及预测作为误解的来源。相关行为者在每次稳定性中对核灾难的预测取决于其预期焦点的多样性，这也与其职业和日常生活所滋养的生命形式有关。围绕核应急管理的两个参与者网络之间可以观察到明显的竞争，其中 SPEEDI 的参与方式有所不同：社会控制网络和自决网络。前者，居民是被动的自我，服从政府的指示；在后者中，居民被视为自主主体，可以主动决定保护行动。此外，我还讨论了基于这些分析的预测技术的未来后现象学-ANT 研究。