49th
Accuracy Rank

Tolga

Tolga Bilge
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0.015

Relative Brier Score

162

Forecasts

45

Upvotes
Forecasting Activity
Forecasting Calendar
 

Past Week Past Month Past Year This Season All Time
Forecasts 0 24 258 162 311
Comments 0 0 6 4 15
Questions Forecasted 0 22 61 51 65
Upvotes on Comments By This User 0 20 51 45 53
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New Prediction
Tolga
made their 1st forecast (view all):
Probability
Answer
2%
Less than or equal to 24
17%
Between 25 and 34, inclusive
40%
Between 35 and 44, inclusive
31%
Between 45 and 54, inclusive
10%
More than or equal to 55

I put most of my weight towards the higher buckets due to a general increasing trend, presumably driven by increased uptake of autonomous vehicles. There also seems to be seasonality in the data, but would need significantly more time to do a more serious forecast.

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New Prediction

Considering that there have been fewer than expected launch failures in recent years compared to the base rate, I adjust up my forecast from that produced by my base rate analysis

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New Prediction

Updating after correcting a data error in my initial forecast which propagated through:
https://www.infer-pub.com/comments/97509
(have edited, so the rationale is correct now)

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New Prediction
Tolga
made their 1st forecast (view all):
Probability
Answer
70%
Less than or equal to 499
30%
Between 500 and 999, inclusive
0%
Between 1000 and 1499, inclusive
0%
Between 1500 and 1999, inclusive
0%
More than or equal to 2000

Data I used:
2020: 1340 total incidents
2021: 1091 incidents
2022: 625 incidents
2023 (up to July 2nd): 272 incidents

To model the decreasing trend since 2020, I took a logarithmic transformation of the incident counts and applied linear regression to the output value, in order to capture what seems to be something like an exponential decay curve.

I then used a Monte Carlo simulation. I calculated the difference between observed and model-predicted values. Using the mean and SD of these differences (residuals), I ran 10,000 simulations, counting how many fell in each bucket, in order to obtain my final probabilities:

  •     less than 500: 80.33%
  •     more than 500 and less than 1000: 19.67%
  •     more than 1000: ~0.0%

Because I lack confidence in this model, I slightly de-extremize my final probabilities when making my forecast.

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New Prediction

We have 3 missions that will very likely go ahead in this period identified by the question writers:

  1. Peregrine Mission 1, launching on Vulcan Centaur VC2
  2. Nova-C lander, mission IM-1 (will land on the south pole, so will be especially difficult, only 1 out of 3 attempts has been successful)
  3. Japan's Moon Sniper (lander) - launching on H-IIA 202

    In addition, scheduled for the relevant time period we have more landing missions:
  4. IM-2, using another Nova-C lander (will land on the south pole, so will be especially difficult)
  5. Chang'e 6 - Long March 5, which is supposedly scheduled to launch in May 2024.

Since missions tend to get delayed often, and some are close to the end date of this question, I will assume there are only 4 attempts, rather than 5.

I count that there have been 193 missions to the moon:
https://en.wikipedia.org/wiki/List_of_missions_to_the_Moon#Missions_by_date

And of these, 41 have been launch failures, and 152 have not been.

Then, using the Laplace rule of succession I calculate the probability of a launch failure in any given future moon mission to be 21.54%

On the previous moon mission question, conditional on successful launch, I had the base rate analysis:

https://www.infer-pub.com/comments/94277

Laplace rule base rates for post-launch successful missions:

Soft landing on south pole = 40% (updated for recent 2 attempts)

Luna mission = 61.5%

Zond mission = 58.3%

Soviet mission = 62.5% (not sure that I got all the data for this calculation)

Any mission = 68% (relatively low confidence estimate, but this is what I will be using here for non-south-pole missions)

I will label our 4 missions as:
Mission A - South Pole Landing
Mission B - South Pole Landing
Mission C - Non-South Pole Landing
Mission D - Non-South Pole Landing

For missions landing on the south pole:
P(Launch Successful)=1-0.2154=0.7846
P(Landing Successful | Launch Successful)=0.4

Therefore:
P(Mission A or B Successful) = P(Launch Successful)*P(Landing Successful | Launch Successful)=0.7846*0.4=0.31384

For missions not landing on the south pole:
P(Launch Successful)=0.7626
P(Landing Successful | Launch Successful)=0.68
Therefore,
P(Mission C or D Successful)=0.7846*0.68=0.53353

Now, we calculate the probability that no mission is successful:
P(Mission A Fails)=1-0.31384=0.68616
P(Mission B Fails)=0.68616
P(Mission C Fails)=1-0.53353=0.46647
P(Mission D Fails)=0.46647

Therefore:
P(All Fail)=P(A Fails)*P(B Fails)*P(C Fails)*P(D Fails)
=0.68616*0.68616*0.46647*0.46647
=0.11020

And hence, our overall probability that at least one moon landing resolves successfully per the question requirements is:
1-0.110=89.0%

Repeating the analysis, if we exclude IM-2, we get 85.3%

If we include IM-2 and also Chang'e 6, we get 93.1%

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New Prediction
Tolga
made their 2nd forecast (view all):
Probability
Answer
0% (+0%)
In 3Q 2022 or 4Q 2022
0% (+0%)
In 1Q 2023 or 2Q 2023
0% (+0%)
In 3Q 2023 or 4Q 2023
100% (+0%)
Not before 1Q 2024

No news on this, still don't see it happening anytime in the near future with ExxonMobil having recently pulled out of this area

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New Prediction

Didn't happen

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New Prediction

Still don't see this happening in a way that meets the resolution criteria

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