This is hard to visualize- there's a big difference between Arctic & Antarctic summer heating - peaks vary by ~12,886 years.
Think of it this way, Antarctica naturally melts while the Arctic gains ice- not just based on seasons, based on regular orbits
Stretch this out for the last 800,000 years- there's a seemingly random pattern but it's not, it's irregular but cyclical. Sometimes the Arctic gets much more summer sunlight, sometimes Antarctica does and it can be by ~20%
In one hemisphere the ice grows, the other melts.
To tie this together, why does this all matter?
Early on proxy data on global temps & CO2 content was based on Antarctic ice cores.
But as we see, there's a long time lag between Antarctic glaciation/deglaciation patterns and Arctic.
Our planet's climate isn't cut and dried, if we depend solely on older proxies, we get an irregular & colored view of climate past- but if we look at more proxies & from a greater global distribution, we see CO2 does not lag temperature.

Okay, this ain't exactly "orbital mechanics & it's implications for paleoclimate proxy data usefulness for beginners" but... I've been leading up to this; it has a very important message towards the end, here it goes.
This might come as a shock, but the Earth revolves around the sun.
And it does so in an irregular but predictable way, based on the gravitational pull the other planets have on Earth- it's irregular but predictable & it causes major changes in our orbital path.
Our orbit isn't circular but elliptical- that ellipse can be quite a bit "out of round" or it can be nearly round - we're just about as round now as it gets- only 5 million Km separates the closest we get to the sun in any year, to the farthest.
Why is this so important?
Because the poles only get sunlight roughly half of the year, and the greater the axial tilt, the "further up" the sun gets.
If your summer is when the earth is farther away, your polar ice caps won't melt as much.
This encourages glaciation.

This is a work in progress, thought it might be fun to show it before it gets full annotations.
I think there's enough info for some to "get it" but the reason is simple enough- we really live on "two worlds" when it comes to ice caps.

@dan613 Remember the absolute disaster when they debuted the Cybertruck and they ended up blowing out two "indestructible"side windows?
Or the rollout of FSD, and the subsequent very difficult birthing it's had? This doesn't look good for an innovation leader.
Where's the sub-2 second Roadster?
"Technology" companies don't keep making promises that they can't fulfill, not even Apple can get away with that!
It comes a point where after you've sold X number of units, the world understands, you're really a manufacturer and real world P/E starts to take effect.

@dan613 @panamared27401 They announced this morning a clearance sale, $7500 for in stock 3 & Y models, their two biggest sellers.
Everyone else is scrambling to build more vehicles, they can't sell existing stock.

Almost afraid to post this on the Bird site but... has anyone seen the price of a share of TSLA stock this morning? I saw it tumble almost from the gate, and it's now down 8% for the day, and they've announced $7500 price breaks on existing inventory while also talking about cutting production staff and build numbers.
Is Tesla in trouble strictly due to Elon's destroying his own cred?

Here are the daily comparisons for both Arctic and Antarctic ice extent for each day in 2022 compared to the average for each day 1979-2021. This year's Antarctic data is (and will end) as the lowest in the data set, with the Arctic in 5th, and global almost certainly in 3rd. For today's date (Dec 17) the global total is the 2nd lowest ever and there is a chance by the end of the year, we will have the lowest total global daily extent.
Source:
https://masie_web.apps.nsidc.org/pub//DATASETS/NOAA/G02135/seaice_analysis/Sea_Ice_Index_Daily_Extent_G02135_v3.0.xlsx

Until Mauna Loa observatory returns to action, I'm going to use NOAA's global CO2 measuring system as my benchmark.
For the last week, CO2 levels are up 0.26PPM. This week's data is 1.84PPM higher than last year's the cumulative increase is the lowest for this date in the last 10 years.