ところで: By the Way (Topic Shift)

Every other connector in this group exists to link — to glue one idea onto the last as its reason, its result, its parallel, its contrast. ところで does the opposite. It exists to cut the thread. It stands at the head of a new sentence and announces, "I am done with what we were talking about; here is something else." English "by the way" is the closest match, and like "by the way" it is the polite social lubricant that lets a speaker steer away without seeming rude. The trap for English speakers is that "by the way" in English often introduces a related aside ("...and by the way, that reminds me..."), whereas Japanese ところで earns its keep only when the new topic is genuinely disconnected from the old one.

A pivot, not a link

ところで is a discourse pivot. It takes no clause before it — it opens after a full stop, comments on nothing that came before, and launches a fresh, usually unrelated question or remark. The canonical shape is: finish a bit of small talk, then swerve.

The weather and Tanaka's health have nothing to do with each other, and that is exactly the point — ところで signals the jump. Because it is a topic-changer, it very often introduces a question: you drop the old thread and turn the spotlight onto the listener.

It works the same way in a meeting or a structured conversation, where it flags "we are moving on now" — a clean handle for changing the agenda.

Why it can't add a related point

This is the single most common misuse. English "by the way" tolerates a related tangent, so learners reach for ところで to tack on one more fact about the current topic. In Japanese that feels jarring, because ところで has explicitly closed the current topic. If you are still on the same subject, you need an additive connector.

Here both facts are about the same shop, so それに ("on top of that") keeps the thread alive. Swap in ところで and a native listener would brace for a change of subject that never comes.

Japanese even has a dedicated word for the related aside that English "by the way" often covers: ちなみに ("incidentally / for reference"). ちなみに adds a relevant footnote to the current topic; ところで abandons the topic entirely. That contrast is worth memorizing.

The food-timing note is about the medicine, so ちなみに fits and ところで would not. Think of it as a spectrum: ちなみに stays on-topic, ところで breaks off.

Register: conversational ところで vs written さて

ところで is a conversational pivot — natural in speech, chat, and light writing. In formal writing and speeches, the topic-shifting opener of choice is さて ("now then / to turn to..."), which does the same "moving on" job in a more composed register. A written report changing sections reaches for さて; a chat with a friend reaches for ところで.

Both さて and ところで are covered together with じゃあ and そういえば on the connective openers page; the takeaway here is that ところで sits at the casual end of that family.

The homonym trap: clause-internal ところ

Here is where ところで truly needs its own page. The string ところで also appears inside a clause, where it has nothing to do with topic-shifting. That inner ところ is the formal noun ところ meaning "point / place / moment," and it takes ordinary particles (で・に・を). Position tells them apart: the topic-shift ところで stands alone at the front of a sentence; the noun ところ hangs off the end of a verb clause with a particle glued to it.

Compare the aspectual "just at the point of" uses, where 〜ているところ / 〜たところ marks the exact moment of an action:

In 出るところです and 作っているところに, ところ is a noun meaning "the point/moment," and the で and に are its particles — this is time-and-aspect grammar, worlds away from "by the way."

Worse, there is a third homonym: 〜たところで, attached to a past-tense verb, means "even if / no matter how much" and always leads to a futile or negated result. This is a concessive construction, not a connector at all.

Notice: no full stop before it, it clings to 急いだ (a past-form verb), and it means "even if." Only the standalone, sentence-initial ところで is the "by the way" of this page. When ところで sits at the very front of a new sentence with a comma, it is the topic-shift conjunction; when it is welded onto the back of a verb, it is one of these clause-internal creatures.

Common mistakes

Mistake 1 — Using ところで to add a related point. This is the big one. If you are still talking about the same thing, ところで is wrong; use also-connectors.

Mistake 2 — Reading 〜たところで as 'by the way.' The concessive homonym means "even if," and misreading it flips the whole sentence.

Mistake 3 — Using ところで in formal writing. It reads as too chatty for an essay or report; the written topic-shifter is さて.

Mistake 4 — Confusing ところで with ちなみに. A relevant footnote to the current topic is ちなみに; only a genuine change of subject is ところで.

Key takeaways

• ところで = "by the way," a clean-break topic pivot. It abandons the current thread and opens an unrelated one, very often as a question.
• It is a discourse pivot, not a logical link — it connects nothing to the previous sentence; it just signals "new subject."
• Do not use it to add a related point. Same topic → また / それに / そして. A related aside → ちなみに. Only a real change of subject → ところで.
• Register: ところで is conversational; the formal/written topic-shifter is さて.
• Mind the homonyms: clause-internal 〜ているところ / 〜たところ (moment/place) and 〜たところで ("even if") are unrelated — they fuse to a verb, while the conjunction stands alone at the sentence head.