>can be bigger than most solar systems
>so heavy one the size of a penny would weigh as much as watch
>been here since the beginning and will probably be here at the end of the universe
>”but bro you can’t see them cuz not even light escapes their gravity”
People actually believe this

Which one is it, /sci/?

I was watchin some clickbait veritasum youtube video about the 3n+1 problem. Basically, any number put through the algorithm will return to 1, but it's unproven and we only tested up to 2^60 or something. They talk about how one way to disprove the theory would be to find a counterexample, like a number where the algorithm goes to infinity instead of collapsing to 1.

What if when you get to high enough number, you find counterexample, and actually the frequency of counter examples increases. Like an unexpected property of extremely large numbers. Is it possible that for extremely large numbers there is like a "phase shift" that happens where they have completely unpredicted qualities that sets them apart from more common numbers? Like for example maybe the frequency of primes starts to increase or something of that nature? wouldn't that be trippy

If they're completely vaxxed, what does it matter if Cletus next door isn't?

/sci/entifically speaking, why only 2D brown girls look good? same goes for furry honestly

A region of several states (in this case, Oregon/Washington/California/Nevada) had skies like pic related continuously for about 2 months last year. If we go to mass solar panels for the bulk of energy production, how does the grid make it through that time without completely collapsing? Just have 2 months or so of energy storage on hand for the entire grid?

Found this on reddit. Any opinion?

My npc boss just decided everyone has to be vaccinated despite we're currently working fron home and I dont want to lose my job yet.

What does your portfolio look like? Let's share some peer-reviewed academic research about asset pricing and how it relates to portfolio construction.

I'll begin by highlighting some research about momentum and value.

Intermediate-term momentum (6-12 months) works:
>Jegadeesh, N., and S. Titman, 1993, Returns to Buying Winners and Selling Losers: Implications for Stock Market Efficiency, The Journal of Finance, 48, pp. 65-91.

Short-term momentum (1-month) does not work:
>Lehman, B. N., 1990, Fads, Martingales, and Market Efficiency, The Quarterly Journal of Economics, 105, pp. 1-28.
>Jegadeesh, N., 1990, Evidence of Predictable Behavior of Security Returns, The Journal of Finance, 45, pp. 881-898.

Long-term momentum (3 to 5 years) does not work:
>DeBondt, W. F., and R. Thaler, 1985, Does the Stock Market Overreact?, The Journal of Finance, 40, pp. 793-805.

A smoother return path leads to larger returns:
>Da, Z., U. G. Gurun, and M. Warachka, 2014, Frog in the Pan: Continuous Information and Momentum, Review of Financial Studies, pp. 1-48.

Seasonality matters for momentum:
>Sias, R., 2007, Causes and Seasonality of Momentum Profits, Financial Analyst Journal, 63, pp. 48-54.

Eugene Fama, the 2014 co-recipient of the Nobel Prize in Economics and father of the
efficient market hypothesis, has summarized the academic research on momentum as follows:
>The premier anomaly is momentum.

There's a lot of research about value going back to at least Fama och French (1992).
>Fama, E.F. and French, K.R, 1992. The Cross-Section of Expected Stock Returns. The Journal of Finance, 47(2), pp. 427-465.

Financial data:
https://mba.tuck.dartmouth.edu/pages/faculty/ken.french/data_library.html

About diversification:
https://icfs.com/financial-knowledge-center/systematic-and-unsystematic-risk

Combining strategies with low correlation is good, e.g. value and momentum:
https://alphaarchitect.com/2015/03/26/the-best-way-to-combine-value-and-momentum-investing-strategies/

I dont care about space, why cant elon just waste his money to build giant robots?