denis bider

For decades, I've been typing on laptop keyboards, on the one hand because I like the flatness of the keys and the compactness of the layout; and because I didn't want to be clumsy with the laptop keyboard when I travel. As a result, I've been suffering from that laptop keyboards are straight and narrow and force the wrists into unnatural positions.

After kids, I now rarely travel, so continuing to use the laptop keyboard has become less justifiable. Of course, I'm too lazy to learn a new keyboard out of sheer strength of will. And so, the down arrow key on my laptop broke and it happens to be a model for which there is currently no key replacement. So I took this chance to look into more ergonomic keyboards.

I wanted to keep the flatness and compactness, so I found the two options in the title that looked the most attractive.

First, I ordered the Logitech Ergo K860. I used it full-time for 5 days, typing many emails, programming and gaming:
I came to dislike the fully …

Love and hate are both based upon self-identification in your experience. You do not bother to love or hate persons you cannot identify with at all. They leave you relatively untouched. They do not elicit deep emotion.

Hatred always involves a painful sense of separation from love, which may be idealized. A person you feel strongly against at any given time upsets you because he or she does not live up to your expectations. The higher your expectations the greater any divergence from them seems. If you hate a parent it is precisely because you expect such love. A person from whom you expect nothing will never earn your bitterness.

In a strange manner, then, hatred is a means of returning to love; and left alone and expressed it is meant to communicate a separation that exists in relation to what is expected.

Love, therefore, can contain hate very nicely. Hatred can contain love and be driven by it, particularly by an idealized love. (Pause.) You "hate" something that separat…

We are back to our regularly scheduled programming where I complain about things that were nice to me, but turned out to be sort of unbearable. In this installment, the nice country that delivered our son and let us live there for 5 years.

To start – there are nice things about Costa Rica:
Unlike the United States, it has accessible and high quality health care. It is a mixed private and public system where gringos like me can take a toddler to the ER at a private hospital and pay $150 to have him evaluated, sedated, and extract the foam he stuffed up his nostril. Meanwhile, everyone else also gets decent service at public hospitals and clinics, perhaps without luxuries like air conditioning (which is quite optional in Costa Rica's climate).Unlike most countries, it does not tax foreign income. This, it turns out, is less a feature and more a predicament.Unlike the United States, it has a reasonable immigration process.These factors contributed to us moving to Costa Rica in 2012, h…

I often see people proposing that an ideal society would do away with money. It would instead be based, say, on love.

Money is a method of social accounting. There are those who abuse it. But for most, it's what compels us to do lots of boring things that we're good at, which help others; instead of fun things we're not so good at, which help only a few.

We already have a society based on love. The fact is that the love of other people is not easy: the sacrifices it requires are hard. Money is a measure of how many boring, unfun things we've done to help other people, as if we loved them, for little benefit to us. Anyone who wants to do these things out of love, can already do so and collect payment as an afterthought. Since most of us don't actually feel this much love for others, money motivates us to do this work for those we do love.

What people are actually proposing is an economy based on fun. This would create about as much material well-being as a child cre…

If pseudonymous claims on Reddit can be believed (narrator: "Usually not"), this was the culmination of an exchange with someone who claimed to be "much more than a voter": a holder of a master's degree in international relations, an active participant in the Intelligence Community, and (from many comments I won't reproduce) a holder of a low emotional quotient. The following started with my suggestion that the US bombing weddings in the Middle East is a bad thing:

Me:
It seems it hasn't occurred to you that "Look at all this power!" isn't an ethical reason to be in the region. Fighting the commies might have been, but that is over.
"Much more than a voter":
This isn't about ethics. No one cares about your subjective beliefs. Please look into international relations. Here's what some say is the predominant school in it, but the truth is that it has subsumed all other schools of thought within it. Poke around a bit in here. …

A week ago, I posted about a simple diff algorithm which works, produces tolerable results, but is ultimately a toy. I wanted an algorithm that produces excellent results while keeping consistent worst-case performance.

I didn't want to implement the Myers algorithm because:
I find it hard to understand. I'd need a better understanding to implement it.It uses recursion. This is unfit for production. I would need to understand the algorithm even better to fix this.It has worst-case performance O(NM). This is unfit for production. I would need to understand it completely, inside-out, to figure out how to implement a compromise between optimality and performance.My capable colleague already attempted all of the above, suggesting a different approach is worthwhile.I was inspired by this excellent visualization from Robert Elder's page about the Myers diff:


I built on the core idea from my simple diff, the unique unit map, to devise a sliding matrix algorithm:
Instead of a full m…