BUG[?]: ΣLIST, ΠLIST with verrrry short lists

[ttw]

I've been complaining about such behavior since the HP48 came out. I formerly used lists for fast computation. However, in many cases, I found that my programs would check for 0 or 1 length lists and take some action to keep the calculator's check for the same thing from stopping. Usually I did something like {0 0} + before summation or {1 1} + before multiplication. If the lists were longish (10+), this was still faster than looping.