Re: "choice nugget of hogwash"
11,700 years ago, the Earth was slowly but steadily warming from the last Glacial Maximum, which occurred about 20,000 years ago.
In a period of just a couple decades, ice cores in Greenland show that the average temperature in Greenland dropped by 18 degrees F!
An event like that today would probably kill hundreds of millions of humans, because of crop failures and a shortage of energy for heating.
That first spike in temperature, called the Bolling-Allerod, coincided with melt water pulse 1A which raised sea about 100 feet. Then the temps dropped back to glacial maximum levels followed by another tremendous rise in temps which coincided with melt water pulse 1B that raised sea levels another 45 ft. and by the time the Holocene had begun sea level had risen 400 ft.