Per 
A Klein Bottle, which is a three-dimensional representation of a four-dimensional object
Item #: SCP-XXXX
Object Class: Keter
Description: SCP-XXXX is a mathematical concept that is unable to be comprehended by any entity capable of thought or ratiocination (e.g., sapient organisms, computers). The reason for this appears to be because the concept concerns the mechanics of the physical fourth dimension, which presumably cannot be legitimately understood by entities that exist within only three dimensions, as they simply lack the capacity.
According to Foundation records of SCP-XXXX instances, all attempts made by entities to comprehend the concept results in loss of brain activity in biological organisms, and cessation of functioning in computerized entities, although it has been speculated that if one of these three-dimensional objects hypothetically succeeded in the assessment of SCP-XXXX, it would result in [DATA EXPUNGED], due to the happening of such a thing conflicting with the physical nature of reality. It is not actually known whether or not this could actually occur outside of the theoretical realm, but the possibility is not to be dismissed, as SCP-XXXX has been known to cause space-time anomalies when it is manifested into the three-dimensional world by means of being conceptualized by a thinking entity.
The first confirmed record of SCP-XXXX is from 1964, the individual responsible for it being a French theoretical physicist named Lazare Caton. According to his journal, Caton had been very fascinated with the notion of understanding the fourth dimensional plane, and conceived SCP-XXXX by his own imagination.1 Caton was confirmed to have died, as a result of his brain anomalously ceasing all activity; something that we now know to be a result of SCP-XXXX's manifestation. There are numerous records proceeding Caton's instance of other scientists in the field of mathematics and/or theoretical physics being killed in a similar manner.2
Addendum:
SCP-XXXX cannot necessarily be contained, since it is, essentially, only an idea, though preventative measures are always being considered to control the frequency of its occurrence.
