32,768
Just a number to many people. It is in takata's post a bit above, #1698. But it has a special significance in computer programming. It is half of a "64K" space, sometimes called a page space. In the simple program "Notepad" it was the maximum number of characters in any note you wished to jot down, for example (at an earlier time). Usually adequate for that, but if not, too bad.
Here it is the number of possible ft/min, up or down, that can be displayed, for vertical speed. I don't want to argue here whether it is an adequate number, but simply to point out the way in which the binary computer efficiency considerations can influence the range of "instrument" displays.
The numbers in this 64K space require 15 binary bits (ie 0 or 1) to represent them, plus a 16th to represent the sign. Computer words are commonly multiples of 8 bits in length these days.
Actually, in one version of implementation of this numbering, 32767 positive values are available, 32767 negative values, and two zero values. That's right, there are two zero values in the most simple arrangement-- plus zero, and minus zero. That wouldn't be so bad if level flight didn't require a zero value. I'm not being facetious here-- this one issue alone required a lot of attention in many computer applications over the years.
The point here is that there are many things in control by computer program that are subtly different from the way we are trained to think, and may occasionally lead to unanticipated results in service. This is going to be particularly true in computers pushed to the maximum in speed with a minimum of size, weight, and power consumption; using software written by people in organizations under similar pressures, to some extent.
The views of pilots as to how such software is working in practice therefore deserve some respect. Unfortunately, once the aircraft is sold, the rewriting of software doesn't contribute anything to the making of that sale.