Is using the particle は twice here natural?


I've come across the sentence

> 父は休みの日はずっとテレビを見ている。(My father spends his days off watching television all
> the time.)

where it doubles in using the は particle. From [another
post](https://japanese.stackexchange.com/questions/6366/can-the-
particle-%E3%81%AF-be-used-twice), it seems that this would be a valid
sentence if one of the particles marks the topic, while the other marks a
constrast. Yet in this case, it seems that both particles mark the topic as I
don't believe there is anything obvious to contrast. Would I happen to be
missing something here?




There are situations when something being contrastive doesn't necessarily mean
intentional implication. Contrast lays in possibility of several candidates,
especially so binary pairs like speaker/listener, while implication lays in
our intention to deliver information indirectly. And while it's impossible to
imply without having several options, having several options doesn't have to
bring implication.

Some of such examples can be 実は or 今日は. Both have a very strong contrast with
a lie and other days, but at the same time both are often used without
intention to imply anything else. The main factor in figuring out whether
person tries to imply something or not, in my opinion, is mutual
understanding. The more and better people know each other, the easier to
deliver intended meaning indirectly using wording, gestures, facial
expressions and other things. Culture also affects it, for example, generally
Japanese people try to praise others and humble their own achievements, and
such things like insults would go against it. This leads to a situation that
people's faults often would be expressed indirectly, and it changes people's
understanding. All situations related to praises have higher chance to include
implication, people become conscious of it and either start to use or avoid
it.

My opinion about は differs in some places from classical は explanations. I
look at it from more practical view, and in my opinion は strongly relates with
our feeling about what we want to talk. Such way if person wants to talk about
父 and still keep it within 休みの日 context, there is no other way than to mark
both by は particle. Comparing to other double-triple subject sentences like
象は鼻が長い, that can be transformed into 象の鼻は長い and other variations,
父は休みの日はずっとテレビを見ている is much more rigid. Despite both contrast and implication
are connected, if we want to talk about implications, we have to look not to
much at contrast, but speaker's intention.

