Passage Summary: Environmentalists hate a science project because it pollutes as much as a factory, and they think if factory pollution is bad, then science pollution is also bad.

Conclusion: The spacecraft experiments are unjustifiable because they cause as much ozone damage as a year of factory pollution.

Reasoning: Since the damage from a factory is considered unjustifiable, any action causing an equivalent amount of damage must also be unjustifiable.

Analysis: The environmentalists are ignoring the benefit side of the cost-benefit analysis. A factory's pollution might be unjustifiable because its output isn't worth the environmental cost, whereas the spacecraft's pollution might be a necessary evil to save the ozone layer. Look for an answer that points out the failure to consider the potential positive outcomes of the experiments. The flaw lies in treating all pollution as equally unjustifiable regardless of the purpose behind it.