Sunday, May 20, 2018

Apple Is Greedier Than Ever, And It Will Be Their Downfall

Personally I think that the Iphone 8 and 10 are terrific phones, but way too expensive.  I have seen competitive phones in the $500 to $700 range.  There are even cheaper phones that are feature rich.

---------- Forwarded message ----------
From: John Coffey <>
Date: Sun, May 20, 2018 at 11:07 AM
Subject: Let's Keep It Real, Apple Products Are Garbage!

Let's Keep It Real, Apple Products Are Garbage!

Saturday, May 19, 2018

Intelligence Creep

I think that we are in an era of "Intelligence Creep", where devices are rapidly getting smarter.  There is currently a competitive market to make more intelligent devices.  Thirty years ago this was science fiction of the highest order.

Tuesday, May 8, 2018

Google Assistant just DESTROYED Siri

Threadripper processor

If you are willing to spend a thousand dollars for just a microprocessor, AMD is kicking Intel's butt.   

Although that is expensive, when you consider that I spent $2,000 for my iMac in March 2010, it doesn't seem so bad.

This $500 to $600 mini computer looks so straightforward to build that maybe it would be a fun project:

However, I am sure that after the cost of Windows 10 you would be looking at around $700 total.

I would love to have a gaming PC, but don't want to spend a fortune on it.

Monday, April 30, 2018


My 2009 iMac shut down for no reason. It rebooted okay. If I had to guess I would say it is a problem with the power supply, which I had to replace once before. Chances are this will get worse over time until I do something about it.

Best wishes,

John Coffey

Sunday, February 18, 2018


I struggled to print color chess diagrams using a black and white ink cartridge on my HP F2100 printer. I had done this successfully using the same type of printer belonging to someone else. However, when I tried to print the chess diagrams, the black and white squares came out blank. So I fooled around with the print settings and nothing seemed to help. However, I kept fooling with the print settings and it suddenly worked correctly. I honestly don't know what I did different to make it work.


5 Reasons to Buy a $188 Laptop

I think that this is interesting ...

Monday, February 12, 2018

Nintendo: STOP Doing This With Switch Games! | RGT 85

iPhone battery replacement.

I'm blown away by what happened today.

I have been trying to make my 64GB iPhone 6+ that I purchased 40 months ago last as long as possible. I'm past the point where I would buy a new phone every two years, especially since modern phones are good enough that the changes from one year to the next are not as revolutionary as they used to be.

Apple received some bad press when it was revealed that they were slowing down older iPhones with worn out batteries to help preserve the battery life. Because of the bad press, Apple put their $79 battery replacement service on sale for $29. I had an appointment to get the battery replaced a month ago, but when I showed up for my appointment they didn't have any batteries available. So I waited a month to be notified that the battery had arrived and I went in today to have the service done.

I dropped off the phone at the Apple store and they told me that the repair would take an hour. So I got some lunch at the mall and wandered around to pass the time.

At this point a thought creeped into my mind, where I wondered what would happen if the repair didn't work? After all, my phone is 40 months old, so maybe something would go wrong and the phone would not work with the new battery? This might seem like an unnecessary worry, except this is actually what happened. They informed me that my iPhone did not power on with the new battery installed.

They immediately informed me that they were giving me a new 64GB iPhone 6+, and still only charging my $29. I was shocked by this, and asked if the phone was refurbished, but they told me, no, it was a new phone. So I walked into an Apple store with $29 and a 40 month old phone, and walked out with a brand new phone of the same type.

I'm impressed.

Tuesday, January 30, 2018

Stockfish limitation on sacrifices

​In this position Stockfish completely fails to see 29... Rc1, until I make the move on the board and then take back the move.  Then it has it in its hashtable and it instantly recognizes it as the best move leading to mate in 9 or 10 moves.

This is an interesting limitation on the chess program's ability to see sacrifices.​  However, after about a minute and 50 seconds, at a depth of 29 ply, Stockfish figures out that Rc1 is the best move.  For me, the move is pretty intuitive.

If I were writing a chess program, I would have it greatly reduce its search depth on sacrificial moves, because 99% of the time they are going to be wrong.  Something like 1. e4 e5 2. Bc4 Nf6 3. Bxf7+ is just a bad move, and the program could waste an enormous amount of time looking at the possibilities that follow.