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Jacob Trefethen Blog
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9 September
8 September
7 September
3 September
31 August
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korrents.com
Putting a chatbot into an ordinary school makes children learn less, because nine in ten of them use it to cheat.Their words
If you take a chatbot and put it into a standard school, 90% of the kids use it to cheat. Doesn't matter what grade level you're at.
26 August
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Their words
I love this quote. I think it's Lenin. There are decades where nothing happens and weeks where decades happen. And we have seen decades of progress happen in the last nine months.
3 August
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Their words
reliability and performance lives on this exponential ladder of nines. So, getting to that first 90% or 99%, that's the easy part. But then every next nine that you want to add, that takes about 10 times more effort.
29 July
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Their words
when you start talking about like most interesting domain problems, you have to pull in so much context that basically even writing what the function is supposed to do becomes a nightmare. The imperative program you write that will get correct 99% of the time is probably good enough to use in almost all cases.
1 July
30 June
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Their words
It becomes insufferable like as a mathematician because you you would basically be like I'm every single time I see one of these I kind of don't know if it's worth my time even if 99 out of 100 of them are right.
27 June
18 June
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Their words
And then frankly speaking, I look back nine of the 10 company I invest halfway they change their business plan because market have changed.
14 June
19 May
6 April
17 October 2025
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Their words
I think basically what takes the long amount of time and the way to think about it is that it's a march of nines and every single nine is a constant amount of work.
13 September 2025
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korrents.com
Nine tenths of the cost of Mars Sample Return comes from a single planetary-protection requirement.Their words
something like 90% of the complexity and cost of MSR is driven by a requirement that the samples “break the chain” on the way home
18 June 2025
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Their words
I think computing supply chains are much easier to monitor than nuclear ones - there is only one TSMC and one ASML, but there are nine and maybe soon ten nuclear powers
13 January 2025
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