The phenomenon referred to herein as "THE CORRIDOR" has been documented since 1947 (WHITMORE INCIDENT) and prior incidents dating to the early twentieth century. Documented cases number redacted. Common characteristics include:
Protocol specifies: do not attempt recovery. Subject has passed the RECURSION THRESHOLD threshold. Recovery would require COMPLETE TRAVERSAL OF THE CORRIDOR FROM INSIDE — POSSIBLE ONLY FROM WITHIN. The cost is ANOTHER ENTRY.
The digital variant (first documented: 1991, Y. CHEN INCIDENT) presents specific challenges: the corridor exists in a distributed medium accessible to UNLIMITED USERS SIMULTANEOUSLY. Unlike physical corridor incidents, the digital variant CANNOT BE CONTAINED OR DEMOLISHED. We recommend NO ACTION — OBSERVATION ONLY.