Mark Changizi Profile picture
Apr 27, 2020 53 tweets 11 min read Read on X
Lockdowns were NOT common sense measures. They were hysterical reactions out of fear.

Here are 15 of just some of the reasons why it was not common sense.

(I’m not including all the reasons we have NOW to see they were a bad idea.)
1. Evidence was poor that COVID19 was doomsday in the first place.
~ Low IFR
~ R0 around 2.3
~ Age distribution similar to flu
~ Hits those with significant morbidities.
~ Safer for the young than flu.cebm.net/covid-19/globa…
ncbi.nlm.nih.gov/pubmed/32097725
2. Literature review prior to COVID19 had little good to say about shutdowns

apps.who.int/iris/bitstream…
3. Almost no awareness of the impact on civil rights, as if emergency declaration suspension of rights, house arrest, mass unemployment and business shutdowns is just something democratic governments sometimes do.
4. There was no historical precedent for putting the entire healthy population in "quarantine".

Never. Before.

Yet this was common sense.
5. There are broad classes of physical distancing & other measures that can slow down infection spread, including organic responses from governmental urgings, shopping times for those with comorbidities, greater cleaning, etc.

And nothing is obvious about which one works best.
6. Even if lockdowns in principle work, do real humans follow them sufficiently well that it remains better than other measures? Not. Obvious.
7. Was the infection even discovered early enough that lockdowns would make much of a difference?
8. Might lockdowns handicap society on reaching herd immunity? Is this good, or bad?
9. Nor is it common sense that lockdowns, even if they handled the infection risks better than other measures, are best when the economic consequences are included. The economic consequences are not common sense. They are devastating, including health and quality of life.
10. Lockdowns can lead to people not seeking medical attention, raising mortality in other areas of medicine.
11. Lockdowns and the resultant economic downturn and loneliness can lead to depression, greater domestic abuse, alcoholism. Is it common sense that these are worth it? Nothing obvious about it.
12. Lockdowns lower everyone’s immune system. Does this make everyone more prone to ANY infection once they come out?
13. Lockdowns confine people together, and nearly all infections happen in such situations, not from grocery stores, restaurants, parks, etc. The mean reproduction number in such situations can be much higher.
14. Members of extended families tend to interact even during lockdowns. But because extended families overlap other extended families in a network, infection continues to spread. This could mean lockdowns worsened things. Common sense doesn’t tell us whether it’s faster or not.
15. The greatest low-risk black swan dangers for humans are the stuff other humans do. Riots, revolutions, wars, human-induced famine, and so on. Playing with civil rights en masse while devastating the economy -- what could go wrong?
"The moral of coronavirus19 will be that social contagion via social networks is more dangerous than biological contagion."

Some reasons why narratives such as "COVID19 is doomsday" are difficult to dispel.

One example of too many of how the media irresponsibly spread panic.

Some misunderstandings that led to hysteria...

The 15 reasons thread at our FreeX newsletter.

getrevue.co/profile/markch…
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More from @MarkChangizi

Jan 23
Once the digital lockdown in Iran stopped, Twitter has been filled with endless streams of this: thread of 💔 Image
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Read 5 tweets
Jul 12, 2025
Many Covid “freedom warriors” pushed lockdowns early on, and then later blamed it all on a master-planning cabal (see thread below).

It’s worth remembering that — while these “freedom warriors” were agitating for mandates — the top was actually urging calm. (“aLL pArT of tHeiR 4D cHeSs pLaN!)
Read 5 tweets
Jul 11, 2025
How dumb do you have to be in 2025 to blame the Jews for the world’s problems?

Let’s count the IQ-demolishing groupthink it takes to arrive at that conclusion: 🧵 Image
1. The Holocaust
You have to forget the last time this scapegoating happened, it ended with gas chambers. That wasn’t ancient history. We have video. Photos. Museums. Survivors. You’re recycling the exact ideology the world swore never to repeat.
2. 10/7
You must ignore the worst massacre of Jews since the Holocaust, livestreamed by the killers, and still say “the Jews are the problem.” If that doesn’t snap you out of it, nothing will.
Read 15 tweets
Jul 8, 2025
🧵 THREAD 🧵

With “freedom fighters” like these below, who needs elite master-planning cabals?
Read 41 tweets
Jun 26, 2025
You, Ivor, were part of the mass hysteria. You were one of those spreading the the very misinformation that you claim was all top down. No, in an avalanche it doesn’t matter which was the first pebble. Any pebble would have done. The ground was itching to slide, and you were one of the billions who contributed to the hysteria. But all you have as your defense was, “I was lied to by the elites!” YOU are in this sense one of the liars that amplified the message.
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Read 26 tweets
Jun 12, 2025
20 months since 10/7, few seem to grasp the sociopolitical forces behind the reactions—or the totalitarianism Gazans live under.

Here are 26 episodes from my Science Moment series that might help you see 10/7 in a new light.

<thread>
The smell of blood. Moment 425

Stop acting as if Hamas and the Palestinian people are on the same side. Moment 427

Read 25 tweets

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