jimb2

jimb2 t1_jac3gmv wrote

Reply to comment by Chevy_Suburban in The bag of tools I was allowed to take home from my Vasectomy by prayingforsuperpower

That's how it works. Those tools are basically punched out by machines, some with a bit of human finishing. Those things are ok to use, but they are not the same quality as older instruments that would last for years. Single-use instruments can be made of cheaper metal etc and won't stand up to repeated use.

Autoclaving is a slow, manual, small batch process that uses a lot of energy. If the whole process is not done carefully, infection can be spread by poorly autoclaved instruments, potentially leading to infection, harm, death and million dollar law suits. This happens. More expensive stuff is disinfected and reused, but for the simple tools, it's smarter to open a new sterile pack.

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jimb2 t1_ja2onlm wrote

Reply to When the Andromeda and Milky Way galaxies combine; will the super black holes in both galaxies eventually combine because of gravitational pull? by TrumpedUpStupidity

In Newtonian physics, two bodies can orbit each other forever. It's stable. They exert gravitational pull on each other but gravity is frictionless so no energy and momentum is lost and it continues forever.

In general relativity, two orbiting bodies will produce gravitational waves that propagated some energy and momentum away. This is a tiny effect in "normal" situations so it would take eons for enough momentum to be lost for the black holes to coalesce. If the black holes do get close together and hit relativistic speeds then the radiated gravitational energy can become enormous and really drop the black holes into each other fast, as in the detected gravitational wave events. This is the last few wild seconds of a process that may have taken billions of years to develop.

However, a real galaxy is not actually a two body problem. The black holes will be interacting with lots of other stars in the combined galaxy. In these interactions, the smaller bodies (stars) tend to gain momentum and can even be flicked right out of the galaxy. The larger black holes will lose momentum and slow down. These effects are sometimes called gravitational "friction". Over many interactions, the black holes will lose sufficient momentum to fall into each other. By this time they will have either absorbed most of stars or flicked them out into intergalactic space, never to be seen again.

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jimb2 t1_j8k8i9l wrote

Reply to Is it possible that abiogenesis is still happening right now on earth? by dolekanteel

The problem is that any source of low entropy energy will immediately get colonised by sophisticated organisms that that have billions of years of development over a bunch chemicals that have coalesced in a crack in rock or whatever. The origin of life was probably in very slow, unreliable, marginally-alive processes.

Those startups needed to be the only show in town to survive. They would now competing against modern organisms that have been through zillions of improvement cycles. It's like a F-18 versus a wooden stick.

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jimb2 t1_ix6zs8l wrote

Reply to comment by stewartm0205 in Indigenous people are less likely to survive the year after an ICU admission. 12 months after being admitted to intensive care, an Indigenous person is more likely to have died than a non-Indigenous person, according to Australian research. by MistWeaver80

They are also likely to have worse health before the intervention, for many reasons. A big one is that they typically don't have the same culture of health maximisation that is common in the white middle-class. It's a tough problem.

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