The dubious wisdom of choosing Excel for this aside, how many people working in (1.) computing and (2.) statistics saw a file with exactly 65536 rows, with nary

The dubious wisdom of choosing Excel for this aside, how many people working in (1.) computing and (2.) statistics saw a file with exactly 65536 rows, with nary an eyebrow raised? And I mean the first time they saw it, not the second, third or fourth day in a row.