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Comment Similar experience (Score 2) 151

I witnessed a similar incident in my Combinatorics class, first year University.

A group of students all copied the assignment from one of their friends. That friend made a simple mistake with his addition. And everyone blindly copied that mistake.

Pretty easy for the professor to catch on. First year math majors wouldn't all make the same basic mistake.

Comment Extra Weight? (Score 1) 223

I'm thinking that there's going to be considerable extra weight added to the plane for hydrogen tanks.

Toyota's Mirai, their hydrogen vehicle, has 2 tanks that weight a combined 87.5kg (193 lbs), rated for 10,000 PSI, and gives it a range of 500 kms.

Granted, Toyota over-manufactures their product for safety and durability -- but factoring that tank weight up for what is needed for an airplane would increase the overall weight of the plane considerably.
The Internet

Vint Cerf on COVID-19's Impact on the Future of Internet (medianama.com) 53

Vint Cerf on the great many lessons that the coronavirus crises has taught us about infrastructure writ large: More directly associated with COVID-19 is the need for detecting exposure and tracking contacts to reduce the spread of the disease. Mobiles and the Internet appear to have roles to play for at least some tracking and tracing system designs. The application of machine learning to large medical datasets may help identify the ways in which SARS-COV-2 actually works. It seems that we are finding new syndromes triggered by this virus as research progress is made. We don't know enough and we must learn more.

Among the stark lessons we have learned is the fragility of food and medical equipment supply chains, either because of excessive concentration or because transport connections are broken. We are seeing this dramatically in the United States where farmers have been unable to sell to restaurants that are closed or operating at much reduced capacity out of concern for the propagation of the virus. These lessons should teach us to create much more resilient infrastructure in every dimension. We need to refresh national stockpiles of protective equipment, medical devices and vaccines. More generally, we must imagine other potential global catastrophes and put in place plans to mitigate. The time to agree on best practices for emergency response is before the emergency, not during. We must not allow this pandemic or a future one to become our society's Titanic.

Comment Re:Anyone running their own server (Score 2) 70

Same. With my own domain name, each website I buy from/register with gets a unique email address.

So far, I've caught a major railway, MLB organization and 2 large ecommerce sites giving those email address to 3rd party marketers. Plus, a few smaller online stores.

Sadly - while each got reported to the federal govn't anti-spam organizations, nothing has been done.

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