Teach me something useful about a subject you know very well.

Doesn't have to be a detailed lesson, in fact ideally just a few words or a single post.

Boosts appreciated, 2023 is coming and I'd like to get smarter. Maybe we can all get a bit smarter.

I'll start:

My job is voiceovers and I can tell you with absolute confidence that reading your writing out loud is like a magic trick for better proofreading.

The mouth stumbles on mistakes the eyes glide over.

@ConorMahood breastmilk changes temperature and constitution in reaction to the baby's suck. Twins being fed at the same time by the same mother can be receiving two different temps of milk!
@urbanfoxe whaaattt, that is so amazing!
@ConorMahood I swear the stuff is the closest thing we have on the planet to a magical elixir.
@urbanfoxe that seems to me like a great analogy
@ConorMahood when accessing services online, use 2fa where it is available to ensure your online accounts are secure. 2fa = 2 factor authentication as in 2 factors required in order to authenticate you being you. First factor generally something you know (your password) and second factor, something you have (generally your device ie. mobile phone). So, a bad guy somehow gets your password to an online service, they still can't get in unless they have your device (phone) to authenticate.

@ancatdubh @ConorMahood great advice. If the 2FA feature actually worked. There are countless sites using countless services out there where the 2nd authentication simply doesn’t happen. And these are big brands too.

Very often 2FA relies on a third party, like email, or text, or whatever. Which is an intrinsic flaw.

@Steveb @ancatdubh @ConorMahood yep. SMS is almost worthless as 2nd factor.

@ConorMahood well it's not useful but it is interesting...

Wombats have square poop.

@Eamon1916 it is too early to say for sure if it is useful, but it is 100% definitely interesting
@Eamon1916 @ConorMahood those look like whiskey rocks 👀
@ConorMahood I used to work in produce, and a guy I worked with told me that rotting potatoes smell like a rotting corpse. I've dealt with dead rodents and can confirm.

@jorsh woah that is horrifying and thus, extremely interesting!

Thank you!

@ConorMahood @jorsh Pro tip: never dump that entire bag of potatoes straight into your compost bin, unless you're fond of a years worth of rotting corpse smell.

I wish this was not something learned by personal experience.

@alan @jorsh @ConorMahood if they don’t rot, they sprout.
@jorsh @ConorMahood roast pork smells very similar to burning human flesh. If you have a firefighter coming for a Sunday roast, choose something else.
@jorsh so we're all potatoes. I knew it! (As a german guy that's no surprise)
@ConorMahood Another way to proofread better is to choose an ugly font and switch to the smallest size you can read. Your eyes stop skipping over things because they have to focus and hey presto all the mistakes leap out.
@johnmoynes @ConorMahood
As the son of a letterpress printer I learned that reading something backwards is a useful way to spot mistakes (not gramatical ones; but but spelling, repeated words, formatting and odd characters such as 0 and O or i I l and 1.)
@dorkomatic @johnmoynes @ConorMahood was married to a proofreader.... Backwards was her trick.
@bannedalot Fascinating :)

@nosrednayduj I think it's because human brains are so good at guessing... It's why nearly everyone can read the attached image and almost noone can proofread effectively (especially their own writing).

She also had hawk like vision (unfortunately now has macular degeneration) and could usually see a bus number before the rest of the stop could see the bus. Was astonishing going out and about with her to see just how many errors are on billboards and signs that us normal people never notice!

@dorkomatic @johnmoynes @ConorMahood Not only backwards; when you use a setting stick to set type, it’s backwards and upside down.
@johnmoynes @ConorMahood love that. Heard "read it out loud" a million times, but never this. Thanks!
@ConorMahood very nearly everyone can learn or be taught to draw. The 'magical' thing a representational artist is doing is just this at its most basic. Measuring the form of three dimensional objects as they exist in space, generally reproducing and recording the lines that form the planes in two dimensions.
@ConorMahood As a computer scientist, I work mentally with powers of two on a regular basis. With a little practice, I've become able to count to over a thousand on my fingers, by treating them as a binary register. For example, having my right thumb, ring finger, and pinky sticking out is 1 + 8 + 16 = 25. I just have to be careful to not hold my hands too high with someone in front of me if I'm at 132.

@Zotmeister @ConorMahood I'll give you an interesting variant on that. I've used my hands as base 6. Counting on (generally) my right hand from zero to five and then for six I raise one finger on my left hand and none on my right, representing 10 in base six. That lets you get to 35 on two hands.

I've worked at doing base 2 but haven't found enough instances where I need to manually count past 35.

@AdamSchmidt @ConorMahood Nice! Hadn't considered alternatives before, but it occurs to me that most people could probably trivially handle left-hand fingers each being five and right-hand fingers each being one, getting them to 24 even without thumbs.

Or even better: left hand is tens, right hand is ones, thumbs are five times more than the other fingers. It's our natural base 10, and it gets us to 99. This could probably be learned easily by most anybody! And hey, no accidental birds XD

@Zotmeister @ConorMahood Interesting, I like your base 10 idea with thumbs as 5. I'll try that out next time 🤔
@ConorMahood @doalty Always assume data presented to you has an error of some point. Verify everything.
@DataChick @ConorMahood @doalty Extrapolated compliments of an ex-manager: the most dangerous data is when you take a measurement and get what you expected, so you don't bother to check your signal integrity/dataflow path. Make sure that you're measuring what you think you are, by forcing faults, so you know you're not just getting lucky but not actually correct results.
@smellsofbikes @ConorMahood @doalty @DataChick This sounds a bit like a software maxim I have heard (and trust in): always be suspicious if code seems to run perfectly the first time.

@ConorMahood @doalty @smellsofbikes @Gwyntaglaw @DataChick After 20 years, I can remember only a few times code ran perfectly the first time.

In each case, it was because I’d spent a great deal of time examining the problem first.

@ConorMahood @pgburns Medieval altarpieces have a lot more in common with one’s local Better Business Bureau, or a travel advertisement, than one might think. They often provided much-needed pilgrimage traffic to smaller communities, boosting local business while expanding awareness of the local shrine and its relics. #medievalart #arthistory #histodons #marketing
@ConorMahood If you’re #editing a passage you need to be super-duper error-free … read it slowly BACKWARDS, then review forwards again. Works like a charm! #proofreading #AmEditing #FreelanceEditing
@ConorMahood In the 19th century Ottoman Empire educated ladies not only spoke multiple languages but also played the oud as part of their education.
@ConorMahood For me, it's not the mouth that stumbles, but rather, the ears that hear stumbles. I often have my work read out loud by the computer, and I hear mistakes that escaped me in both writing and proofreading
@danielskatz yes, a friend of mine does the same thing and swears by it.

@ConorMahood The International Regulations for Preventing Collisions, or COLREGS, define a strict order of precedence for what boat has the right of way in any situation. Broadly speaking, the order is:

- any vessel being overtaken
- not under command
- restricted ability to maneuver
- constrained by draft
- engaged in _commercial_ fishing
- sailboats
- powerboats
- seaplanes
- any overtaking vessel

1/2

@ConorMahood
2/2
When two boats of equal status meet, generally the one on the right goes first. Sailboats have special rules:

- A sailboat on a starboard tack has right of way over a sailboat on a port tack
- If two sailboats are on the same tack, the leeward sailboat has right of way.

If a sailboat is running its motor for propulsion, it counts as a power boat.

@ConorMahood a frequent beginner mistake in #genealogy is listing folks by their married name. We want to list them by their original surname and then connect their spouse(s) to them which will reference their married name. Allows generational research as without the original surname you’ll hit what we call a “brick wall” and you won’t be able to trace the line further back.
@Goodtrouble @ConorMahood The standard method for naming someone in Scots law is useful for that. A Miss Jean Brown who marries a Mr Black & susequently a Mr Green would be "Jean Brown or Black or Green".
Assuming she changed her surname on marriage, which is a comparatively recent custom.
@ConorMahood so I was taught that in A-fib the risk is for blood clots to break off from the Atrium walls and go towards the brain causing strokes- however there’s more- the ineffectful pumping of the heart causes blood to pool in the atria forming clots but the actual walls of the atria remodel (the lining) so that the blood clots can attach to the walls, to start with, before they break off and cause adverse effects
@ConorMahood sonething I share with my Nursing students when they write papers- read your papers out load to yourself, then have people read your papers for errors, grammar etc
@ConorMahood wow my typos, sorry
@BushinskiSusan @ConorMahood Isn't it nice that in Mastodon you can edit your toots if you make typos, it notes that it's edited, but does help making fixes.
@ConorMahood Your brain doesn't work the way you think it does. A lot of the choices you make are done with models that are run by specialized neurons that predict outcomes based on past experience. Then, when someone asks why you made that choice, your brain pulls reasons that are unrelated to how those models work.
@Estarianne @ConorMahood my dad was a psychologist and was fond of telling people that 90% plus of human rationality is used only to rationalise decisions they've already made on an irrational basis.

@bannedalot @ConorMahood it's not necessarily irrational, your models make a lot of good choices! Like when you decide to get up to go to the bathroom because your bladder is full or eat because you are hungry.

But a key to understanding things like racism and discrimination lies in understanding that these models are very dumb and don't discriminate in the information they encode. When you're watching COPS so are they.

@Estarianne @ConorMahood I think perhaps "nonrational" might be a better description.
@bannedalot @Estarianne @ConorMahood There's a cool book called "what I believe but cannot prove" that's a collection of essays by experts on their fields. Several neurobiologists had essays about this, that they don't think rational thought is common or possibly exists at all. It's all subconscious/intuition type decisions that we rationalize afterwards. However, side question of well what's intuition if not rationality at a subconscious level?

@smellsofbikes @bannedalot @ConorMahood there are people who believe that! But I think most believe that there are two systems interacting, but that which system is doing the work isn't always transparent.

In cognitive psychology these are called system 1 and system 2, there's quite a bt of work out there. Kahneman is a key developer of the concept. https://www.amazon.com/Thinking-Fast-Slow-Daniel-Kahneman/dp/0374533555