Look into suggests an action will be taken. The speaker isn't just observing, they're actively seeking information.

Expect Action

Investigation length is not specified. It might take a short time or a long time to 'look into' something.

Uncertain Duration

When someone needs to 'look into' a matter, don't expect an instant answer.

Look into hints at a thoughtful process of considering different choices.

It is used when someone is not ready to decide yet but will think about it.

Before deciding, a person might need time to 'look into' the matter more deeply.

In a literal sense, 'look into' often means focusing one’s sight on something specific.

'Look into' can suggest a deep connection or emotional moment when referring to eyes.

It can emphasize the action of searching the depths or distance within something.