mammogram rare breast cancer false positive 2% chance

A positive medical test doesn't always mean a disease is likely

~2% in this example

Imagine a disease affecting one person in a thousand. A test catches every real case but incorrectly flags 5% of healthy people. Among those who test positive, only about 2% actually have the disease. False positives can outnumber true positives when a condition is rare, even if the test seems highly accurate.

Replacing ozone-damaging gases brought a climate cost

CFCs and HCFCs used in air conditioners damaged the ozone layer. HFCs were introduced to replace them, but they worsen climate change. Newer HFO refrigerants have no ozone-depletion potential and much lower global-warming potential.

AI safeguards can be removed after model weights are released

If an AI model's trained weights are released publicly, people can make their own copies and modify them. They may be able to remove safeguards such as refusal rules. Once many copies have spread online, the original creator cannot simply delete all of them.

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mammogram rare breast cancer false positive 2% chance

A positive medical test doesn't always mean a disease is likely

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