San Pietro scrying engine

The scrying engine portrait bust of Antonio del Pollaiolo, among the most popular computational shrines of San Pietro in Vincoli. Here the engine is processing Spirograph data.

The San Pietro scrying engine is a scrying engine built into the portrait bust of Antonio del Pollaiolo in the church of San Pietro in Vincoli.

Originally designed to simplify the process of creating liturgical calendars, the San Pietro scrying engine has, over centuries of use, accumulated the world's largest library of calendrical and theological subroutines.

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