欧洲工艺行会从1560年到1760年间的训练是必要的，对于这一观点，历史学家希拉赫·奥格尔维提出了质疑。

Historian Sheilagh Ogilvie challenges the view that training by European craft guilds from 1560 to 1760 was necessary.

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都柏林大学三一学院的乔•赫拉维尔和她在布里斯托大学有机地球化学单元的同事，认为他们已经揭开了谜底。

Jo Hellawell of Trinity College, Dublin, and her colleagues in the Organic Geochemistry Unit at Bristol University think that they have solved the mystery.

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虽然规模较小，但在淡水水体毒藻疯长也会发生——因此，赫拉维尔女士认为这就是化石湖神秘事件的答案。

Toxic blooms also occur, albeit on a smaller scale, in bodies of freshwater—and that, Ms Hellawell thinks, is the answer to the mysterious case of Fossil Lake.

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