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Learn Hardcore Finnish: Tämä todistaa suunnitelman toimivan. - This proves that the plan works.

Hardcore Finnish
/Trying pottery with a friend
/Tämä todistaa suunnitelman toimivan.

Tämä todistaa suunnitelman toimivan.

Word

Tämä todistaa suunnitelman toimivan.

Meaning

This proves that the plan works.

Part of speech

sentence

Pronunciation

Course

Hardcore Finnish

Lesson

Trying pottery with a friend

Breakdown of Tämä todistaa suunnitelman toimivan.

to work (function/operate)

Questions & Answers about Tämä todistaa suunnitelman toimivan.

Why is it suunnitelman instead of suunnitelma?

Because this sentence uses a compact Finnish structure meaning that the plan works.

In that structure, suunnitelman is the logical subject of toimivan, and it appears in the genitive form:

suunnitelma = plan
suunnitelman = genitive form

So suunnitelman toimivan means roughly that the plan works / is working.

A useful comparison is:

Tiedän hänen tulevan. = I know that he/she is coming.

There too, the subject of the shorter embedded clause is in the genitive.

What exactly is toimivan?

It comes from the verb toimia, which means to work, to function.

Here toimivan is the present active participle in the form used in this construction. The basic participle is toimiva, which can often mean working, functional, effective.

But in this sentence, toimivan is not just describing suunnitelman like an ordinary adjective. Together, suunnitelman toimivan expresses a whole idea:

that the plan works

So it is more verbal than adjectival here.

Is Tämä todistaa suunnitelman toimivan the same as Tämä todistaa, että suunnitelma toimii?

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Yes, the meaning is essentially the same.

Tämä todistaa suunnitelman toimivan.
Tämä todistaa, että suunnitelma toimii.

The second version uses a full että-clause and is often easier for learners to understand.

The first version is more compact and can sound a bit more written, formal, or stylistically tight.

Why doesn’t Finnish use toimii here?

Because toimii is a normal finite verb form, so it belongs in a full clause:

että suunnitelma toimii

In the shorter construction, Finnish replaces that full clause with a participial structure:

suunnitelman toimivan

So:

toimii = used in a full clause
toimivan = used in this compressed clause-equivalent structure

Why do both suunnitelman and toimivan end in -n?

Because this pattern uses forms that happen to look similar:

suunnitelman is the genitive of suunnitelma
toimivan is the participial form used in this construction

So the matching -n endings are not a coincidence, but they are not doing exactly the same job either. Finnish is using a fixed grammatical pattern here.

Is suunnitelman the object of todistaa, or the subject of toimivan?

The best way to think about it is:

suunnitelman is the logical subject of toimivan
the whole phrase suunnitelman toimivan is what todistaa takes as its object-like complement

So Finnish is not really saying:

This proves the plan

It is saying:

This proves that the plan works

That whole final idea is packaged into suunnitelman toimivan.

Is toimivan an adjective here, like in toimiva suunnitelma?

Not in the same way.

Compare these two:

toimiva suunnitelma = a working / effective plan
suunnitelman toimivan = that the plan works

In toimiva suunnitelma, toimiva behaves like an adjective modifying the noun.

In suunnitelman toimivan, the participle is part of a verbal structure expressing an embedded statement.

So even though the forms are related, the grammar is different.

Could Tämä todistaa toimivan suunnitelman mean the same thing?

No. That changes the structure completely.

toimiva suunnitelma = a working / effective plan
toimivan suunnitelman = a case form of working / effective plan

So Tämä todistaa toimivan suunnitelman would be understood as something involving a working plan as a noun phrase, not that the plan works.

The original sentence needs:

suunnitelman toimivan

That order is important.

What is this kind of construction called?

It is often called a clause-equivalent construction in English descriptions of Finnish grammar. In Finnish grammar, it is commonly discussed as a type of lauseenvastike.

In practical terms, it is a compact way to express something that English would usually put in a full that-clause:

että suunnitelma toimii
suunnitelman toimivan

For a learner, the easiest approach is often:

recognize it as a shortened that-clause
identify the noun in the genitive as the logical subject
identify the participle as the verb idea

Is this construction common in everyday Finnish?

Yes, but the full että-clause is often simpler and more common in casual speech:

Tämä todistaa, että suunnitelma toimii.

The participial version:

Tämä todistaa suunnitelman toimivan.

is very normal too, especially in written Finnish, formal style, reporting, argumentation, and contexts where a more compact expression is preferred.

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