HNHacker News
TopNewBestAskShowJobs

MTmind

17 karma · joined July 23, 2012

submissionscomments
MTmind··on California suspends Cruise's autonomous vehicle deployment
The baseline should be other engineering we trust with our lives, like planes, trains, ships, skyscrapers, and bridges. Society expects more from technology than from humans... that's why we use technology! Deaths from self-driving cars should be very minimal, every crash analyzed and understood, and findings publicly communicated and mandated.
MTmind··on Twilio’s toll fraud problem
I spent a lot of time working on this exact problem at a "Big Tech Retailer". 6 different teams had worked on it before we did, and all had given up. This is actually a very difficult problem that is at the intersection of two other very big and familiar problems... spam phone calls and bots on the internet.

Spam phone calls... the global phone system is a network of relays. No telecom provider connects everyone on the planet together. To call our grandmother in Russia, we may have to go through Verizon, Deutsche Telecom, MTS, and ~five different smaller, regional telecom providers. The first telecom provider will request the second to complete the call, will trust they do this, and will accept the price they charge upon which they'll add their own costs. This occurs recursively until the phone call has been connected and completed. This implicit trust enables fraudulent actors to get into the circle of trust. Verizon may trust Deutsche, Deutsche may trust MTS, and MTS may trust a smaller telecom provider who in turn trusts a spam caller. This enables you to get spam calls. Telecom providers themselves don't know all the callers on the global telecom network and don't really know how much people will be charged. There is no global government to legislate across all telecoms.

Bots on the internet... the internet as a whole doesn't have a firm sense of identity. It's just a network protocol routing packets to ip addresses. In the past, these ip addresses were mostly human beings. In the current time, the majority of the participants on the internet are bots/computer programs. A website like "Big Tech Retailer" has >90% of all traffic from computer programs. Elon Musk was probably right that Twitter is full of bots, because the entire internet is swimming with bots. They can be incredibly difficult to detect because AI blurs humans with bots.

This toll fraud problem is that bots we struggle to detect place phone messages to phone numbers we struggle to identify. This ends up costing a huge and growing amount of money. You cannot truly solve the problem without solving the two underlying problems of bots on the internet and spam calls. Solutions to those problems may require rethinking and rebuilding the entire communication system we've built our lives around.

Nonetheless, we can greatly reduce the effect of this problem. At "Big Tech Retailer", myself and two others we were able to reduce the cost to a small percentage of what it was. After that point, the business sort of stopped caring because the fraud cost less than the staff. There were perhaps five techniques that were most helpful, all of which were contemporary fraud fighting/bot fighting/security techniques.

If you're a startup facing this problem, I can help give you some guidance. Twilio will probably see this post and start working on a solution, but that may take a long time. There are easy things you can do to mitigate the problem right now. You can contact me at manrajt@gmail.com.

MTmind··on Ask HN: Seeking an engineering mentor
No, I'm not looking for 20 years of mentoring at all.

I've just begun as a new-grad engineer at FAANG company, and have now realized that unless I get some guidance from someone experienced, that 20 years could go by really fast without you fulfilling any of the reasons that you became an engineer in the first place.

Maybe a different avenue will prove more fruitful.

MTmind··on Addicted to Distraction
A simple solution to this, if your using an iOS or OS X device, is to use the network link conditioner.

Using this tool, you can decrease the bandwidth going into your computer, increase the number of packets being dropped, and increase the delays while doing DNS lookups. The effect of this is you may bring your network speed down enough that your mind can keep up with the torrent of things trying to distract it. By imposing on yourself the network connectivity of 10 years ago, you may regain the focus you had back then as well. The difference is very noticeable, you'll realize right away that your doing something unessential when you're waiting +10 seconds for it to download.

Food for thought.

MTmind··on Help Finding Jonas Salk Interview
Thank you so much for the PDF, I still can't access the website for some reason. You've honestly made my day, thank you so much :)
MTmind··on Ask HN: How to be happier
Buckminster Fuller seems absolutely brilliant. Thank you for leading me on to him :)