It really is. The stories range from the metaphysical ingenuity of Arthur C. Clarke on the birth of Christ and Robert A. Heinlein on the death of man to Ray Bradbury's hapless time traveler taking a disastrous step backward to the humor of H.L. Gold's disoriented man who ""smells purple"" to the readable reality of Wilmar H. Shiras' mutant youth. Damon Knight's character talks in cliche and makes his point while Edmond Hamilton features a bitter astronaut and what it's really like out there. Convert- ible.