How often do 10.0 earthquakes occur?

The G-R law with b≈1 suggests that a 10.0 earthquake would happen about 30% as often as a 9.5 earthquake, so every 300-400 years doesn't seem unreasonable on that basis.

earthscience.stackexchange.com - Are Richter-magnitude 10 earthquakes possible?

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Source: http://topo.earth.chiba-u.jp/afr/backnumber/no24/24%E5%8F%B702kumamoto.pdf

The relationship is plausibly log-linear (in accordance with G-R); if you accept that the relationship will hold up to higher magnitudes, you would estimate the probability of a M10 event in this location at once every 30,000 years. To get an estimate for "anywhere in the world" you would need the cumulative data for all. A good place to start is the USGS website - they have a handy table with data since 1900. Taking these data and plotting them on a log-linear graph, then extrapolating a linear fit, gives the following chart: This is rather scary because it suggests that there is about a 1:100 chance of a M10 earthquake anywhere in the world, in any given year. Note that I plotted the data for magnitude x to x.9 at the location of x - which tends to underestimate things a little bit. Note also that at the extreme end of very large earthquakes (8 and above), the data looks like it might be deviating from the straight line - but there are not enough data points to draw any firm conclusions about the shape. There are several other caveats. First - the assumption that the model can be extrapolated can be challenged: a particular fault may not be constructed in such a way as to store the energy required for an M10 event, as it will always release the energy before it gets there (and there may be a "stress shadow" effect, which says that after a big earthquake, the chance of another big one is temporarily reduced because stresses have been relieved; this is why this model can only be used "over a long period", and does not accurately reflect the risk of earthquake in the next five years).

Still - one percent.

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What is it called when you fall in love with your predator?

Stockholm syndrome is an emotional response. It happens to some abuse and hostage victims when they have positive feelings toward an abuser or captor.

webmd.com - Stockholm Syndrome: What Causes It and How to Treat It - WebMD

Stockholm syndrome is an emotional response. It happens to some abuse and hostage victims when they have positive feelings toward an abuser or captor.

What Is Stockholm Syndrome?

Stockholm syndrome isn’t a psychological diagnosis. Instead, it is a way of understanding the emotional response some people have towards a captor or abuser. Sometimes people who are held prisoner or are subject to abuse can have feelings of sympathy or other positive feelings toward the captor. This seems to happen over days, weeks, months, or years of captivity and close contact to the captor. A bond can grow between the victim and the captor. This can lead to kind treatment and less harm from the abuser as they might also create a positive bond with their victims. Someone who has Stockholm syndrome might have confusing feelings toward the abuser, including:

Love

Sympathy

Empathy

Desire to protect them

Stockholm syndrome might also cause the hostage to have negative feelings toward the police or anyone who might try to attempt a rescue.

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