Noblesse me oblige to report on the (in)accuracy of the Chinese Slumber Method predictions for today:
Prediciton posted on 2014-02-13 23:07 UTC
Prediction valid for 2014-02-14 19:00--19:59 UTC
Huobi predicted price: 3750 plus or minus 30 CNY (3720 -- 3780)
Huobi actual price (L--H): 3991--4016 CNY
Error (difference between interval centers): 250 CNY
The prediction is the blue rectangle at the far right in the chart below, under the price bars. The yellow dots are the mean prices at 19:00 UTC every day.
Obviously someone bought several thousand coins around that time, well over the "right" price, with the sole purpose of creating a freak spike on the charts and falsify my prediction.
Seriously, today Huobi's volume (over 200,000 BTC) was a historical record among all exchanges, and the price went through a crash and a rally, with no obvious reason for either of them. Huobi's clients kept trading furiously until past 2:00 am local time, and went to bed in the middle of a spike that had apparently reached its top. Today's Slumber Point is way out of line with the previous three which had a clear descending trend.
The prediction for Bitstamp was
Bitstamp predicted price: 615 plus or minus 10 USD (605 -- 625)
Bitstamp actual price (L--H): 654--670 USD
Error (difference between interval centers): 47 USD
In the following plot, the predicition is again the rightmost blue rectangle. The yellow dots are
Huobi's pices at Slumber Times, divided by the currency factor R (6.40 for feb/07 to feb/09, 6.12 for all other days):
Note that, today at 19:00 UTC, the price at Bitstamp was comparatively higher than Huobi's, even assuming the low currency factor R = 6.12.