Expression can be simplified on list

[Jussi Piitulainen]

Lawrence D’Oliveiro writes:

> On Wednesday, September 14, 2016 at 2:25:48 PM UTC+12, Ben Finney wrote:
>> Lawrence D’Oliveiro writes:
>> 
>> > It would be better if all such conversions were explicit
>> 
>> Why? It's entirely unambiguous ...
>
> <http://lwn.net/Articles/590299/>

That's the story of a time object t being false around midnight UTC,
because the class defined it to be so.

What would bool(t) be?