wątpliwe przypuszczenie

"I think that is a very questionable assumption."

They rest their opposition to a longer school year on the questionable assumption that the curriculum wouldn't change.

An organization may find that it is operating on questionable assumptions, particularly in terms of the wants and needs of its customers.

The consensus in Washington rests on a number of questionable assumptions.

But outside experts who have seen the reports have criticized them as incomplete and based on questionable assumptions.

Board members said they were aware that those values had also come under fire, because they can be based on questionable actuarial assumptions.

Let us acknowledge, right up front, that the current answers to such questions depend upon various questionable assumptions.

All questionable assumptions - so the chances are that more cash will be needed.

While I fully respect the sincerity of those who support the report, it seems to me that their case is based on two questionable assumptions.

All the same, I think her argument rests on some highly questionable assumptions.