He also holds back certain uncomfortable or speculative ideas.

He put forward the speculative idea that these patches appeared to migrate across the surface, suggestive of herds of small life forms.

There are some very speculative ideas about the future of the universe.

This could be a place where senior researchers would have a place to work on very speculative ideas.

I would not ordinarily mention so speculative an idea at such an early stage.

I put forward the speculative idea that 'God' had created man in his own image by means of an artificial mutation.

He also becomes more dogmatic and constructive, passing beyond the range either of the political or the speculative ideas of the real Socrates.

Even as a purely speculative idea, however, this museum project performs an important civic service.

Write deliverable documentation as late as possible, avoiding speculative ideas that are likely to change in favor of stable information.

More speculative ideas have focused on bodies altogether different than Earth-like planets.