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There are situations where transitives and intransitives are switched without
any clear reason. For example, a transitive verb is usually used to describe a
situation like this:

> タクシーが街を流す

rather than the logically more reasonable intransitive version:

> タクシーが街を流れる

* * *

I am not particularly discussing the availability of the latter, and to
compare the frequency of these forms is totally irrelevant to my question, but
suppose you want to do an estimate. I know of a search engine called Google,
which, at this moment, returns 35 hits for the string for the illogical
"タクシーが流す", most of which are the relevant phrases, and 14 hits for the string
for the logical "タクシーが流れる", of which 7 are the relevant phrases (excluding
this very question), so that indicates that the illogical form is used almost
five times the logical form ( **keeping aside the hits made by another
"Google" that I am not aware of, which returns 16,700 results for the
illogical "タクシーが流す" and 507,000 results for the logical "タクシーが流れる", leading to
the opposite conclusion, according to a user of this site** ).

* * *

Outside of this peculiar usage, the transitive 流す requires an animate and
volitional _agent_ as the subject, which is distinct from the _theme_ that is
the object, and cannot be used reflexively.

> * そうめんが流す  
>  店員がそうめんを流す  
>  そうめんが流れる
>
> * 気球が空を流す  
>  冒険家のチームが気球を空に流す  
>  気球が空を流れる
>
> * ニュースが電光掲示板を流す  
>  ディレクターがニュースを電光掲示板に流す  
>  ニュースが電光掲示板を流れる

Similarly, in stock exchange contexts, transitive verbs are used instead of
their intransitive counterpart:

> 株が高値をつける  
>  株に高値がつく
>
> 株が引ける  
>  株が引く

On the contrary, when directions are given in cooking, intransitives are used
instead of the more logically appropriate transitives:

> 酒とみりんが入ります  
>  酒とみりんを入れます

Outside of this peculiar context, the intransitive 入る either 1) requires an
animate volitional agent 2) or the sentence has to describe the
potential/ability rather than a single event.

> * 日曜日の晩に辞書がかばんに入ります  
>  日曜日の晩に私が辞書をかばんに入れます  
>  この小さな辞書はかばんに入るけど、この大きいのは入りません

Why do these switching happen?
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2012-06-24T15:04:57.370
5952
2012-07-19T22:46:47.423
2012-06-27T13:49:45.720
question
verbs transitivity
Switch between transitives and intransitives
The decision on whether transitive or intransitive should be used in the above
sentences is not based on whether there is a direct object that exists for the
verb to take. I believe the decision is based on the focus of the sentence,
the transitive focuses on the action and the intransitive focuses on the
subject. Also, when you use transitive, it implies that there is a change in
state and something was affected by the action, whereas the intransitive
versions do not reflect this.

> タクシーが街を流す

The above focuses on the action of traveling through town, which is more
important than the subject (taxi). Also, I believe that using transitive shows
that something is being affected, in the above example, traveling through town
shows a change in state (your surroundings are constantly changing), whereas
if you used the intransitive version, I feel that the change in state is lost
and the focus is on the taxi only.

> 株が高値をつける

Here again, the focus is on the action and what happened rather than on the
subject, and the important aspect is that the stock value changed.

> 酒とみりんが入ります

This is the opposite, the action is irrelevant, what's important is what
ingredients are used, not the action of putting them in, and also there is no
notion of "change in state". In other words, you have no idea what is being
affected.
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2012-06-24T23:26:03.907
5954
2012-06-25T04:34:59.590
2012-06-25T04:34:59.590
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answer
After thinking several days, now I think that タクシーが流す is not just a transitive
version of タクシーが流れる. They can have different meanings (nuances). Basically 流れる
represents just an observation, but 流す often implies a certain intended action
when we talk about taxi. タクシーを（が）流す means to drive an **empty taxi** here and
there looking for potential passengers. Therefore, the transitive and
intransitive versions are not automatically interchangeable in this case.

NOTE: タクシー **が** 流す (not using を) sounds a little unnatural to me and I
wouldn't like to use it, but we can really find many uses of it. Perhaps some
people use it because タクシーが流れる can't convey the meaning mentioned above. This
might be a reason why they still stick with 流す even when a subject is タクシー.

An example use of タクシーが流す:
<http://plaza.rakuten.co.jp/hashiretaxi/diary/200806010000/>

As for other expressions, I think that the difference between transitive and
intransitive versions is mainly a point of view. Both can be logical and can't
be logical. The difference is how to describe phenomena from speaker's point
of view.

Moreover, we can use 入る in other cases than cooking instruction. One of the
most notable things to 入る is 邪魔 (じゃま). Do you think that 邪魔 is always animate?

> 邪魔が入ったから、やり直しになったよ。

We can find a lot of other intransitive examples, such as:

> いったん、CMが入ります。
>
> ここで音楽が入るわけですね。
>
> 大量の注文が入りました！
>
> 今年も田んぼに水が入りました。
>
> お客様お待ちかねの新型ゲームが入りました。
>
> 法案反対は50票は入るだろう。
>
> 目にゴミが入った！
>
> （ボールがゴールに）入れ！入れ！

Some of you might not like Google, but you can find a huge number of examples
on it by searching "が入りました", etc..

Finally, let us see the following example.

> *学校に行く前に辞書がかばんに入ります

We don't say this indeed, because there is no reason to change subjects in the
middle of an utterance. Especially in writing, this kind of ねじれた文 is not
recommended. However, the mother of the student would say,

> かばんにちゃんと辞書入ってる？ ちゃんと入れた？ 入ってるかどうか、もう一度確かめて。

We don't say 入る in this context, but we can say 入っている, which is also a
intransitive expression. This may be a little off topic, but I think 入っている is
used more widely than 入れてある.
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2012-06-25T21:27:42.723
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2012-06-26T10:34:02.767
2020-06-17T08:18:27.500
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answer
I think the notions of _focus_ , _intention_ , _observation_ , and _Google_
are good ones, but consider this English example: a person starts talking
about a terrible meeting in the past tense. He gets worked up and starts
speaking in the present tense - e.g. "...so I say, are you telling us..." and
now a variety of tense issues can arise and he makes mistakes no Japanese
would/can make. I wonder if a Japanese person might start thinking
'intransitively' (it's a recipe so _food cooks_ ) but then gets caught up in
himself transitively and makes mistakes only Japanese can make. I can't even
imagine what might happen. These won't be the mistakes i make. The mind
wanders as blogs are typed (and not proofed) and now Google serves up
intriguing sentences with mistakes that give insight into the Japanese brain.
If I were truly bilingual, would/should I make them too?
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2012-07-19T00:10:41.807
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2012-07-19T00:10:41.807
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I do not have a firm hold on what is going on in these sentences, but here are
some observation and speculation.

As for タクシーが街を流す, as I wrote in a comment on the question, I observe that the
structure of the sentence is quite similar to 陸上選手が100メートルを流す. The latter 流す
means something like “exercise lightly,” which I feel some connection to the
meaning of the former 流す, namely “(for a taxi) to cruise looking for a
passenger.”

As for 株が高値を付ける, I consider it as a personification: the stock is usually
inanimate (of course), but in this sentence, it is considered as something
which moves up and down by its own will.

As for 酒とみりんが入ります, it might be the case that the narrator does not want to
describe it as a step which a listener MUST FOLLOW, because doing so may drive
the listener away. Rather, the narrator wants to give the impression that the
step is easy and nothing to worry about, by describing it as something which
happens spontaneously.
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2012-07-19T22:46:47.423
6190
2012-07-19T22:46:47.423
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answer