The following sentences "look" like they should work. Perhaps highlighting non-scalars that look like scalars (1 = [: */ $) in the GUI j interfaces would ease learning j?
a=: ,8
NB. ... later in session ...
a+1 2
|length error
| a +1 2
a NB. Baffling!
8
a NB. Something is funny about this 8.
\emph{8}
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