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ceejayoz 5 hours ago

The spike in your link's chart clearly starts in early 2020.

And "While our data extends only to 2018" is... important, yeah?

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whimsicalism 5 hours ago | parent | next [-]

i encourage other people reading to look at the chart so they can assess the veracity of ^ comment

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ceejayoz 5 hours ago | parent [-]

Here it is.

https://imgur.com/a/FK3sfna

There's an enormous drop in edit: late 2019, and the second drop starts in 2023.

https://www.sanfranciscopolice.org/your-sfpd/policies/depart...

> Starting on March 19, 2024, Flock Safety began installing ALPR cameras in various strategic locations across San Francisco. This rollout is expected to take place over the next 90 days. Per 19B ALPR policy, the administration of the Flock ALPR system is the responsibility of the Investigations Bureau.

How did the Flock cameras cause two crime drops before their installation?

The article's note about 2018 is talking about extending backwards, not forwards. It's entirely accurate, and a direct quote from your link.

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whimsicalism 4 hours ago | parent [-]

that drop is obviously in early 2020, not 2019 and there is no way you can look at that chart and describe car breaks ins as a "COVID blip"

	▲	ceejayoz 4 hours ago \| parent [-]
		Look at the X axis labels again. The chart is trending down by January 2020, changes directions (upwards) right around the March 2020 spot, and again around (down) the July 2023 spot. The fact that they only have data going back to 2018 means it's hard to say if the pre-COVID stuff was the norm or unusual. To be super-clear, here's the chart annotated to show that 90 day window (black rectangle) in which the cameras were installed. https://imgur.com/a/i00Gna0 "that drop is obviously in early 2020", to reemphasize, is several years before the cameras got installed.

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conductr 4 hours ago | parent | prev [-]

I read this as 2020 was Covid related drop, it then returned to normal for 2 years, then began dropping again in late 2023. The covid blip is explained by what was going on at the time, nothing since 2023 has any explanation and could be flock

	▲	ceejayoz 4 hours ago \| parent [-]
		COVID makes it spike up (after a months long downward trend long before the cameras), not down. Nation-wide, incidentally. The cameras were added where the black rectangle is here: https://imgur.com/a/i00Gna0