She was asked about “Post Exertional Malaise”... 2/n
I held back from commenting overnight to chew it over, but I am still saddened by comments during a presentation I attended yesterday by Prof @trishgreenhalgh & @CIHR_IMHA.
The topic was “LongCovid, Myalgic Encephalomyelitis & More”.
I quote from memory.
1/n
#MECFS #LongCovid
Have you registered for IMHA's next webinar on Long-COVID? Guest speaker Professor Trisha Greenhalgh.
— CIHR-IMHA Community (@CIHR_IMHA) January 12, 2021
When? Tomorrow: *Jan 13th.* 12pm ET
A few spots are left, but going fast!
Registration required: https://t.co/T4PbWNA35Y@KarimKhan_IMHA @CIHR_IRSC @trishgreenhalgh pic.twitter.com/xlWKi4QKF1
She was asked about “Post Exertional Malaise”... 2/n
@Trishgreenhalgh acknowledged the new @NiceComms advice for LongCovid was planned to complement... 3/n
Then it all went wrong.
@TrishGreenhalgh noted the changes to the @NiceComms guidance for ME/CFS, removing support for Graded Exercise Therapy / Cognitive Behavioural Therapy. She noted there is a big debate about this. 4/n
https://t.co/0enH8TFPoe
However Prof Greenhalgh then went off-piste.
5/n
6/n
Aside from ethical issues of naming patients, this is an n=1 case.
7/n
Furthermore, @TrishGreenhalgh failed to mention Prof Jonathan Edwards’ (not on twitter) Expert Testimony.
8/n
His testimony can be found here:
https://t.co/qLhsBJ4Bcu
9/n
I find this ill-befitting of an academic of her standing.
10/n
It puts her view in the field of politics not medicine.
That opens her to political-style criticism, which would be a shame.
11/n
We must play the ball, not the player.
12/n
Perhaps that is why, between 2015-2016 only £5m / year was spent on researching the condition.
Or aproximatly £0.35p per person, per year. Ouch.
https://t.co/TUPEiSCLZq
13/n
It really hurts.
And how ‘aggressive’ were these patients? Is this tweet aggressive? Will I be blocked and blamed?
14/n
I have a fatiguing gut condition and was mis-diagnosed with ME/CFS 4 years ago. I walked 6Km / day.
A specialist ‘undiagnosed’ me as I did not have PEM.
But in 2005, could I have been eligible for a GET study, and might have felt better after exercise.
15/n
She likes to go for walks, and exercises when she can. Had she taken up the offer to participate in a trial, she may have improved too.
16/n
I also experienced gas-lighting from the 20+ docs who told me it was all in my head. Thankfully I now have much better medical support, but many struggle.
17/n
The condition needs research, and that starts with belief, and develops with high-quality, objective science.
END/
I am actually a big supporter of Prof Greenhalgh’s work. Masks are good. So is good patient care.
I have no malicious intent, but it is right to challenge bad pronouncements on this issue.

If you think I have got it wrong, please let me know.
Please challenge misinformation about on ME/CFS, but accept that even great people make mistakes. Forgive.
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I’m launching my Forecasting For SEO course next month.
It’s everything I’ve learned, tried and tested about SEO forecasting.
The course: https://t.co/bovuIns9OZ
Following along 👇
Why forecasting?
Last year I launched https://t.co/I6osuvrGAK to provide reliable forecasts to SEO teams.
It went crazy.
I also noticed an appetite for learning more about forecasting and reached out on Twitter to gauge interest:
The interest encouraged me to make a start...
I’ve also been inspired by what others are doing: @tom_hirst, @dvassallo and @azarchick 👏👏
And their guts to be build so openly in public.
So here goes it...
In the last 2 years I’ve only written 3 blog posts on my site.
- Probabilistic thinking in SEO
- Rethinking technical SEO audits
- How to deliver better SEO strategies.
I only write when I feel like I’ve got something to say.
With forecasting, I’ve got something to say. 💭
There are mixed feelings about forecasting in the SEO industry.
Uncertainty is everywhere. Algorithm updates impacting rankings, economic challenges impacting demand.
It’s difficult. 😩
I’m launching my Forecasting For SEO course next month.
It’s everything I’ve learned, tried and tested about SEO forecasting.
The course: https://t.co/bovuIns9OZ
Following along 👇
Why forecasting?
Last year I launched https://t.co/I6osuvrGAK to provide reliable forecasts to SEO teams.
It went crazy.
I also noticed an appetite for learning more about forecasting and reached out on Twitter to gauge interest:
The interest encouraged me to make a start...
I’ve also been inspired by what others are doing: @tom_hirst, @dvassallo and @azarchick 👏👏
And their guts to be build so openly in public.
So here goes it...
In the last 2 years I’ve only written 3 blog posts on my site.
- Probabilistic thinking in SEO
- Rethinking technical SEO audits
- How to deliver better SEO strategies.
I only write when I feel like I’ve got something to say.
With forecasting, I’ve got something to say. 💭
There are mixed feelings about forecasting in the SEO industry.
Uncertainty is everywhere. Algorithm updates impacting rankings, economic challenges impacting demand.
It’s difficult. 😩
When the university starts sending out teaching evaluation reminders, I tell all my classes about bias in teaching evals, with links to the evidence. Here's a version of the email I send, in case anyone else wants to poach from it.
1/16
When I say "anyone": needless to say, the people who are benefitting from the bias (like me) are the ones who should helping to correct it. Men in math, this is your job! Of course, it should also be dealt with at the institutional level, not just ad hoc.
OK, on to my email:
2/16
"You may have received automated reminders about course evals this fall. I encourage you to fill the evals out. I'd be particularly grateful for written feedback about what worked for you in the class, what was difficult, & how you ultimately spent your time for this class.
3/16
However, I don't feel comfortable just sending you an email saying: "please take the time to evaluate me". I do think student evaluations of teachers can be valuable: I have made changes to my teaching style as a direct result of comments from student teaching evaluations.
4/16
But teaching evaluations have a weakness: they are not an unbiased estimator of teaching quality. There is strong evidence that teaching evals tend to favour men over women, and that teaching evals tend to favour white instructors over non-white instructors.
5/16
1/16
When a teaching award is based solely on teaching evals and then only men get it. pic.twitter.com/szIBkCvTe9
— Dr. Marissa Kawehi (@MarissaKawehi) February 12, 2021
When I say "anyone": needless to say, the people who are benefitting from the bias (like me) are the ones who should helping to correct it. Men in math, this is your job! Of course, it should also be dealt with at the institutional level, not just ad hoc.
OK, on to my email:
2/16
"You may have received automated reminders about course evals this fall. I encourage you to fill the evals out. I'd be particularly grateful for written feedback about what worked for you in the class, what was difficult, & how you ultimately spent your time for this class.
3/16
However, I don't feel comfortable just sending you an email saying: "please take the time to evaluate me". I do think student evaluations of teachers can be valuable: I have made changes to my teaching style as a direct result of comments from student teaching evaluations.
4/16
But teaching evaluations have a weakness: they are not an unbiased estimator of teaching quality. There is strong evidence that teaching evals tend to favour men over women, and that teaching evals tend to favour white instructors over non-white instructors.
5/16
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I'll begin with the ancient history ... and it goes way back. Because modern humans - and before that, the ancestors of humans - almost certainly originated in Ethiopia. 🇪🇹 (sub-thread):
The first likely historical reference to Ethiopia is ancient Egyptian records of trade expeditions to the "Land of Punt" in search of gold, ebony, ivory, incense, and wild animals, starting in c 2500 BC 🇪🇹
Ethiopians themselves believe that the Queen of Sheba, who visited Israel's King Solomon in the Bible (c 950 BC), came from Ethiopia (not Yemen, as others believe). Here she is meeting Solomon in a stain-glassed window in Addis Ababa's Holy Trinity Church. 🇪🇹
References to the Queen of Sheba are everywhere in Ethiopia. The national airline's frequent flier miles are even called "ShebaMiles". 🇪🇹
I'll begin with the ancient history ... and it goes way back. Because modern humans - and before that, the ancestors of humans - almost certainly originated in Ethiopia. 🇪🇹 (sub-thread):
The famous \u201cLucy\u201d, an early ancestor of modern humans (Australopithecus) that lived 3.2 million years ago, and was discovered in 1974 in Ethiopia, displayed in the national museum in Addis Ababa \U0001f1ea\U0001f1f9 pic.twitter.com/N3oWqk1SW2
— Patrick Chovanec (@prchovanec) November 9, 2018
The first likely historical reference to Ethiopia is ancient Egyptian records of trade expeditions to the "Land of Punt" in search of gold, ebony, ivory, incense, and wild animals, starting in c 2500 BC 🇪🇹

Ethiopians themselves believe that the Queen of Sheba, who visited Israel's King Solomon in the Bible (c 950 BC), came from Ethiopia (not Yemen, as others believe). Here she is meeting Solomon in a stain-glassed window in Addis Ababa's Holy Trinity Church. 🇪🇹

References to the Queen of Sheba are everywhere in Ethiopia. The national airline's frequent flier miles are even called "ShebaMiles". 🇪🇹
