⍴⍴10?¯1+2*25 1 ⍴⍴10?¯1+2*26 1 ⍴⍴10?¯1+2*27 1 ⍴⍴10?¯1+2*28 ⍴⍴10?¯1+2*29 ⍴⍴10?¯1+2*30 ⍴⍴10?¯1+2*31 ⍴⍴10?¯1+2*32 DOMAIN ERROR ⍴⍴10?¯1+2⋆32 ^ ^
There seem to be some numbers in the domain of Deal, for which it neither gives an answer, nor a domain error, and just does nothing, and silently returns to input mode, aborting any further execution of the expression the deal was contained in. I tried to pick 20 distinct non-negative 32 bit signed integers with the expression 10?¯1+2*31 And it crashed my Optiplex.