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I work in an Ad Tech company and this week is crazy. We also try to make a code freeze but the reality is many deploys in production to fix things thursday evening...


Liquidity to investors and employees.


That would be a book I would read.

There is one focused on something like this, called Fitness for geeks. https://www.amazon.com/dp/B007UQN22A/ref=dp-kindle-redirect?...


Gold as a commodity (bonds). Gold bars are not liquid.


Bonds can be considered cash equivalents if they have short maturity.

Gold is highly liquid, and from what I've read, it can be considered (in bullion) cash equivalents, except for banks, that due to Base 3 regulations can only consider part of their gold holdings as cash equivalent for liquidity purposes.


There are another cases like these?


I've spent 3 years as an associate in a VC firm. I graduated in computer engineering. And I was invited by the CEO of a rapid growing company (www.inlocomedia.com) to be a product manager of their new Data products.

I think the tech background is important, but the most important thing is to be able to talk to all stakeholders. As a product manager you will have many interfaces with marketing, management, operations, biz dev, and your team (the engineers). You have to be able to communicate well with everybody and provide context and value.


By their official numbers, they have 1,18 Bi DAUs and 1,7 Bi MAUs.

If somebody dies, they won't be counted as a DAU anymore and in on month won't be counted as a MAU.

More numbers in their Q3 earnings reports: https://investor.fb.com/investor-news/press-release-details/...


This may seem pedantic. However, it's not uncommon for a relative to log into a dead users account. Thus showing up on DAU and MAU even after death. Users will log in if for no other reason than to notify people that the user passed and mention the funeral date etc. What makes this significant is these accounts where real and FB really can't get accurate numbers for this so it's all internal estimates.

So, yes FB's official numbers take this and many other factors into account. However, if their internal estimate is say 5%-40% of accounts are fake they are likely to use a number close to 5% than 40%.


While that may happen, the frequency is so low (and would happen once, not every month), that it does not materially impact numbers in the billions.


Dead users are just one of many types of 'fake' user. On it's own it's a small percentage of total active accounts.

But, I bring it up as the proxy for lot's of other similar estimates. I don't know if what % of 'active' accounts in their logs be that 0.1%, 0.2%, or 0.02% are dead, but I suspect they are going to pick a subjective number that makes them look better.

Further, because actuate numbers take a lot of accurate estimates even 'small' biasing of these sub estimates will compound and heavily bias their reported statistics.

AKA, spam accounts may be easy to find. But, spammers may create other fake accounts to mask their 'spam' accounts.


You are missing the real statistics. Only 11% of all apple revenues come from services (app store, Icloud, itunes).

apple makes money from selling phones and computers. If you want to sell a $1,799 notebook (or even $2,399 for the 15 inch version), they need to think on power users.


An always relevant xkcd: https://xkcd.com/1420/


There was a period during the late 19th and early 20th century where pocket watches were reasonably priced and available and yet wristwatches had not appeared. It was WW1 which seems to have made it popular (along with disposable razor shaving, IIRC).

https://en.wikipedia.org/wiki/History_of_watches#1920_Wristw...

I have a 1913 wristwatch in my collection. But, I don't seem to have time to wear that and many fine mechanical watches any more; my smartwatch is so useful I end up wearing that instead.

Sometimes I think that it is somewhat disappointing that things didn't work out the way this mid-1980s science fiction game thought they would:

https://www.dropbox.com/s/nunnwt6ex5bo7e6/hand_computer.pdf?...


You could always get yourself a Pip-Boy 3000: http://store.bethsoft.com/pip-boy-deluxe-bluetooth-edition.h...


Tempting, but still lacks some of the required features. I'm looking for something that I can use to send text messages, set timers and, most importantly, set reminders (also accessible via a web interface) using my voice, without some nefarious company keeping copies and tracking my usage. I.e. the moon on a stick. ;-)


Do you know from which game does your picture comes from?


Looks like it is from a rpg book, not a computer game. My first guess was GURPS by Steve Jackson Games (General Universal Roleplaying System) - but I'm leaning towards one of the oldest roleplaying games (which AFAIK has been "computerized" several times): Traveller.

The "tech level" indicates which level of technology is needed for a particular piece of equipment to be available and/or normal (won't get you burned at the stake for using "magic") - in Traveller it is used to label different worlds in the universe AFAIK - with GURPS it also extends to cross-dimensinal travel, alternate realities, time travel etc.

https://en.wikipedia.org/wiki/Traveller_%28role-playing_game...


Thank you for your answer.

(I had realised it should have been from a rpg, but I kept the game term from the previous comment to avoid confusion)


It is indeed Traveller; MegaTraveller, to be precise. In those tech levels the best we could claim to be is early TL9, with laser weapons &c. We're supposed to have early fusion power, FTL and anti-gravity by the end of TL9, IIRC. I think that TL11 mentioned in the list is at a level where those three technologies are well established and their use routine.


My good old Casio F91W never runs out of style.


Thanks for Crash Bandicoot.

How did you go from games to developing airlines reservation and fares software?


I knew two awesome people through the MIT AI Lab, one of whom co-founded Naughty Dog, and the other of whom co-founded ITA Software. :)


Awesome connections!


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