Elon Musk: How did Elon Musk learn enough about rockets to run SpaceX?


Jim Cantrell’s answer to: Elon Musk: How did Elon Musk learn enough about rockets to run SpaceX?

I helped Elon start the company and all of these answers are spot on. He still has my book on rocket propulsion…..

What I found from working with Elon is that he starts by defining a goal and he puts a lot of effort into understanding what that goal is and why it is a good and valid goal. His goal, as I see it, has not changed form the day he first called me in August of 2001. I still hear it in his speeches. His goal was to make mankind a multi planetary species and to do that he had to first solve the transportation problem.

Once he has a goal, his next step is to learn as much about the topic at hand as possible from as many sources as possible. He is by far the single smartest person that I have ever worked with … period. I can’t estimate his IQ but he is very very intelligent. And not the typical egg head kind of smart. He has a real applied mind. He literally sucks the knowledge and experience out of people that he is around. He borrowed all of my college texts on rocket propulsion when we first started working together in 2001. We also hired as many of my colleagues in the rocket and spacecraft business that were willing to consult with him. It was like a gigantic spaceapalooza. At that point we were not talking about building a rocket ourselves, only launching a privately funded mission to Mars. I found out later that he was talking to a bunch of other people about rocket designs and collaborating on some spreadsheet level systems designs for launchers. Once our dealings with the Russians fell apart, he decided to build his own rocket and this was the genesis of SpaceX.

So I am going to suggest that he is successful not because his visions are grand, not because he is extraordinarily smart and not because he works incredibly hard. All of those things are true. The one major important distinction that sets him apart is his inability to consider failure. It simply is not even in his thought process. He cannot conceive of failure and that is truly remarkable. It doesn’t matter if its going up against the banking system (Paypal), going up against the entire aerospace industry (SpaceX) or going up against the US auto industry (Tesla). He can’t imagine NOT succeeding and that is a very critical trait that leads him ultimately to success. He and I had very similar upbringings, very similar interests and very similar early histories. He was a bit of a loner and so was I. He decided to start a software company at age 13. I decided to design and build my own stereo amplifier system at age 13. Both of us succeeded at it. We both had engineers for fathers and were extremely driven kids. What separated us, I believe, was his lack of even being able to conceive failure. I know this because this is where we parted ways at SpaceX. We got to a point where I could not see it succeeding and walked away. He didn’t and succeeded. I have 25 years experience building space hardware and he had none at the time. So much for experience.

I recently wrote an op-ed piece for Space News where I also suggest that his ruthlessly efficient way to deploy capital is another great reason for his success. He can almost smell the right way through a problem and he drives his staff and his organization hard to achieve it. The results speak for themselves. The article is here End of WWII Model Shakes Up Aerospace Industry.

In the end I think that we are seeing a very fundamental shift in the way our world takes on the big challenges facing humanity and Elon’s Way as I call it will be considered the tip of the spear. My hat’s off to the man.

Sambungan Ardurover (APM 2.5 dan Receiver Spektrum AR 600)


Di dalam wiki Ardurover, ada diterangkan berkenaan dengan sambungan diantara Receiver (RX) dan RC Input pada APM board. Akan tetapi, di dalam gambarajahnya, ia tidak menerangkan dengan jelas, yang mana satu RX output dari segi Throttle, Rudder dan Auto mode. Bagi mereka yang memerlukan gambarajah grafik, sila rujuk gambar di bawah untuk bantuan.

Sambungan APM 2.5 dengan RX

Sambungan APM 2.5 dengan RX

12 tips pelbagai untuk penjimatan wang, kesihatan, pengendalian stress dan sebagainya

  1. Beli barang dapur di Mydin, Econsave, Tunas Manja atau emporium tempatan anda. Elakkan dari membeli di Giant. Anda akan jimat dua kali ganda.
  2. Beli rumah, elakkan dari menyewa.
  3. Kalau nak ke gym, pergilah berenang. Aktiviti berenang membakar lebih kalori daripada mengangkat besi berat.
  4. Beli solar panel. Anda boleh menjual tenaga elektrik lebihan rumah anda semula kepada Tenaga Nasional Berhad melalui skim FIT (Feed-in-Tariff).
  5. Beli voltage regulator dan UPS. TV flatscreen akan tahan lebih lama, jimat elektrik dan boleh mengelak daripada litar pintas akibat penggunaan elektrik berlebihan.
  6. Beli barang Panasonic sekiranya anda mahu air-cond dan mesin basuh yang jimat elektrik dan tahan lama. Jangan beli TV Panasonic dan Samsung. Untuk TV yang tahan lama, beli Toshiba.
  7. Tingkatkan pengambilan karbohidrat dan protein untuk pembentukan otot dan elak cepat lapar (cuba Shaklee ESP). elakkan daripada makanan segera (spt mee segera).
  8. Bersenam semasa di tempat kerja. Senaman mudah seperti push up, pull up dan regangan boleh menaikkan motivasi dan pick up anda.
  9. Jangan malu bertanya. Gunakan Google untuk bertanya, pasti jawapan anda sudah ada.
  10. Kalau urusan yang anda sedang siapkan nampak sangat kompleks prosedurnya, mesti ada cara yang lagi mudah.
  11. Bela kucing. Kucing boleh mengubati stress.
  12. Meletakkan kereta di tempat yang anda tak yakin keselamatannya untuk satu jangkamasa yang lama? Cabut bahagian penting, contohnya spark plug.

Probability and Statistics Cookbook by Matthias Vallentin


The cookbook contains a succinct representation of various topics in probability theory and statistics. It provides a comprehensive reference reduced to the mathematical essence, rather than aiming for elaborate explanations.


Hack your way to change iPhone 4s ringtones (tones)


Kudos goes to: NicholasCross via MacWorld

1. Launch iTunes 10

2. Find and select the song you want to make a ringtone out of in iTunes 10

3. Right-click on the song name and select ‘Get Info’, then click on the Options tab

4. Select the playback period of the song that you want to ringtone to be, make sure it’s 30 seconds

5. Now click “OK” and then right click on the song again, and select “Create AAC version” to create a new version of the song with the 30 second interval you specified

6. Locate this newly created 30 second clip in iTunes (at the top of the playlist if you search by ‘date added’ and right click on the file and then select “Show in Finder”

7. Now in the Finder (or Windows explorer, the process is the same for Windows iTunes 10), rename the file extension from .m4a to .m4r

8. Accept the file extension change to .m4r

9. Now back in iTunes remove the file from the playlist (do NOT move to Trash, select ‘keep file’) and then re-import the file into iTunes 10 by double clicking the .m4r file within the Finder or Windows

10. The file will now be added back into iTunes as a ringtone and you can do what you want with it

The best part about this is that you can do multiple sounds at once. Especially if you use Automator to rename the file extensions of the files in question. I tried this method and found it MUCH faster, and easier. No GarageBand required.