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More from @JohnMashey

3 Apr
@DustyBowl @MethaneThiol @niko_tinius Interesting! You probably know winelandsofbritain.co.uk/lecture.htm but in some sense an even less-noisy (simpler geography/history) climate:wine correlation is the Northward expansion of vineyards in Lake Okanagan area in British Columbia over recent decades.

@DustyBowl @MethaneThiol @niko_tinius Amusingly (given WSJ OpEd hostility to climate science) here was a decent article in the Okanagan valley wine expansion (Tappen is actually further North of the Lake).

@DustyBowl @MethaneThiol @niko_tinius Related to Winelands of Britain earlier), a few years ago, my wife & I did field research in North Yorkshire at Ryedale Vineyards, then-Northernmost commercial English vineyard (already further N than Selley had expected for 2050), nice visit with owner:
Read 5 tweets
20 Dec 20
@mattblaze AFAIK the only group to discover Ken’s hack was us in PWB/UNIX. One of the other guys noticed C prepreprocessor had gotten bigger, looked at binary namelist, found symbol not in source code. I got onto Ken’s system, found the code, very clever.
@mattblaze A bit latet, I was in Lab 127’s terminal room, talking to dmr or bwk, and overheard amusing conversation between ken and Robert Morris Sr, who sometimes consulted for NSA.
(RM Jr of worm fame was just a kid then.)
@mattblaze They were chortling away over cleverness of exploit. Then one (must have been ken) said “think we could put this over on NSA?” (which already had UNIX systems... we did favors now and then).
More chortling, then (must have been Bob): uhh, NSA really doesn’t have sense of humor.
Read 11 tweets
6 Aug 20
CB0.1 Two fine books arrived Tuesday, the first recommended to me a few days earlier by @ProfPCDoherty, the other I’d pre-ordered months ago. I was amused to find on the first page of their Preface, @CT_Bergstrom and @jevinwest a quote Frankfurt's book, a classic I'd missed.
CB0.2 These will join the stack I sometimes use as examples of influential books on critical thinking.
As @CT_Bergstrom has noted, there are issues with Huff’s book for current use, but I included it for historical significance.
CB0.3 The following has substantial excerpts, Table of Contents is shown here:
The authors teach to (lucky) UW college students, but it could be good start for a high school course that *everyone* now needs.
I'd call it "Defense against the dark arts."
Read 23 tweets
29 Jun 20
@Cloudflare SSV1/More to the SIGSEGV story.
UNIX 1970/71 was implemented on PDP-11/20s, which had no memory mapping of protection, although BTL research later got an 11/20 with the KS-11 mapping option:
@Cloudflare SSV2/UNIX Third Edition apparently didn’t have signal(II)
bitsavers.org/pdf/att/unix/3… Unsurprisingly as few PDP-11/20s in Bell Labs would have had KS-11s.
@Cloudflare SSV3/Ken & Dennis got early PDP-11/45, which had real memory management, rewrote kernel in C, and signal was in 4th Edition, the one I started with in Fall 1973, ~same week as we got our 11/45 for PWB/UNIX. Sadly I’ve misplaced/lost that manual, but:
Read 23 tweets
10 Apr 20
i1/ 04/09/20 @Bob_Wachter @UCSF Grand Rounds
(April 2 = typo), about 80 minutes.
He mentions past 2 Ground Rounds have gotten about 100K Views! Desire for good information.
This whole session is relatively low in medical jargon.
youtube.com/watch?v=Odngvc… Image
i2/ Update on COVID-19, at UCSF and around the Country
This is mostly status report, which change rapidly.
i3/ What do we need to do to return to the “life we aspire to”
This is really important, and not often seen in status slides.
Watch this discussion if nothing else.
youtube.com/watch?v=Odngvc… Image
Read 14 tweets

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