all clear• Which is correct is not at all clear.• It is not at all clear that physicaldistances or times can realistically be said to have this property.• It is not at all clear that such absurdly tinyscales have any physical meaning whatever.• What is not at all clear, however, is the way one should adjudicate the differences.• But it was not at all clear that Clinton could win the election.• Indeed, it was not at all clear that Eisenhower and Khrushchev could control the hardliners in their own countries.• But at the time, of course, this was not at all clear.