His brother arrived in New York City during the sleepless dream experiment and was shocked at how he looked.
Date (happened)
between 1946 and 1948
unresolved
between 1946 and 1948
estimated · doubtful · preferred
Why
Sibling event 18399 (the year-long experiment itself) and 845 (Out of This World's publication) share this same window.
Reasoning
Neville dates the sleepless dream experiment (during which his brother visited) to roughly two to three years before Out of This World was printed in 1949, i.e. circa 1946-1948; the brother's visit falls somewhere within that year-long experiment. This is his own recollection decades later, so it is estimated and only doubtful.
Told / reported
15 February 1966
conclusion
Why
dc1-agreement-20261004, pm-actor-551 (PM 8702)
Reasoning
1 claim, no conflict: 1966-02-15 (node:1917).
15 February 1966
estimated
Reasoning
The brother's visit is recounted by Neville during this lecture, whose delivery claim d1 is stated and confirmed at certain confidence (1966-02-15), narrowing the earlier weak after-1961 bound. The telling inherits that same ceiling.