Before agar, microbiologists had experimented with other foodstuffs as microbial media. They turned to substances rich in the starches, proteins, sugars, fats, and minerals that organisms need for growth, testing with broths, bread, potatoes, polenta, egg whites, coagulated blood serums, and gelatine. However, none worked particularly well: all were easily broken down by heat and microbial enzymes, and their surface, once colonized, became mushy and unsuitable for isolating microbes.
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在半导体领域，钪的紧缺同样令人忧心。研究机构SemiAnalysis创始人兼首席执行官迪伦·帕特尔指出，美国芯片制造商的钪库存正在走低，这可能危及新一代5G芯片的生产。
然而，市场却用一场暴跌回应了这份“炸裂”业绩。财报发布后，英伟达股价一度下跌5.7%，最终收跌5.49%。这并非个例——过去三次财报，英伟达每次业绩均超市场预期，但股价却次次走低，形成了一种诡异的“业绩越好、抛压越重”的惯性。