NYT Connections hints today: Clues, answers for February 28, 2026

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important to use the tool as an aid, not a replacement for the developer's

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In general, more testing adds to the costs. And lab-based testing may not be fast or agile enough to support border control officers, fraud investigators or food producers in the field.

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It’s also worth noting that even if alternatives superior to agar were found, scientists are reluctant to abandon established protocols (even when microbiologists do use other jellies, they often still add agar to the mix, for example, to increase the gel strength of the solid media). As agar has been the standard gelling agent in microbiology for around 150 years, an enormous infrastructure of standardized methods, reference values, and quality control procedures has emerged around its specific properties. Switching to a different medium (even a superior one) means results may not be directly comparable to decades of published literature or to other laboratories’ findings.