patrick.net

Automan Empire says

Everything but the simplest 555 timer or add-2-caps-and-a-pot amplifier chip circuits use 2 sided circuit boards with plated-through vias or holes. The first single sided circuit boards that replaced discrete components connected point to point in 3 dimensions needed wire jumpers over the component side to solve this problem. Board architecture for compactness sometimes has sub-boards jumpered in perpendicularly or in a parallel plane, often using a flexible PCB and headers for the jumper itself. Then there are boards designed for automated parts placement all in lines; good luck trying to intuit the schematic by looking at one of these!

Yeah I have a Randall ProTube 1000 II that has and ugly single sided board, and is jumpered with ribbon cables and molex connectors.
I want to point to point the amp. My Amp tech buddy put it on his bench, he is an authorized HiWatt manufacturer. He gave it back and said it looked like it was made with a bunch of surplus components that they had. So they designed the circuit around what they had on hand, and not the other way around.
I love the sound of it, but Caps from the 80's and some of the other components aren't as spry as they were when they were built in the late 80's.
I think he is just a gear snob and didn't want to be bothered with having to redesign the circuit to achieve the desired voltage on the plate and output, I would have been looking for. Or thought I couldn't afford him doing so.
It's not like I'm looking for a Fender Baseman clone circuit, or I would just buy the kit.

Onvacation says

And once you find a workable solution you often stop finding a better solution, no matter how crude and inefficient your solution is.

That is how you become a dinosaur. I have several solutions for almost every problem, as the solution evolves as the use case reveals itself. A simple quick and dirty solution, just allows you to concentrate on more important areas of concern. Then as the project evolves, more elegant solutions evolve. Then those become obsolete, as the complex object, pass through and to objects and routines, may reveal speed or resource issues. I'm always refining methods and ways I do things. I value my collection of bad ideas more than my collection of great ideas. As my bad ideas collection is an invaluable tool when you get enough experience behind it. My Code end up always deploying bug free, while collogues and other teams I warned about the pitfalls of the routes they were taking. Only to get to give them a Trump smile when someone else tells them, "He told you so!".

I owe all of my coding efficiency to my collection of very bad ideas. If you know all of the stupid shit you shouldn't do, then you're only left with all of the sensible options.

Tenpoundbass says

If you know all of the stupid shit you shouldn't do, then you're only left with all of the sensible options.

Theoretically.

We tried this one



Schultz said Nope.

Onvacation says

Tenpoundbass says

If you can project it onto another dimension, and that is accepted as a valid solution. Then all solutions are valid. As it's only a thought exercise, with no one true answer.

Only solutions that obey the constraints are correct. one piece of paper, front and back, no utility lines cross, all houses get all utilities.

Demonstrate it.

Going to the back of the paper does not solve the problem. Lines cross on the back of the paper.

I contend there is no solution, but it's a good problem for students. Some problems can't be solved. That's a lesson a lot of people never learn.

richwicks says

I contend there is no solution, but it's a good problem for students. Some problems can't be solved. That's a lesson a lot of people never learn.

No planar solution.

Moebius could do it. One piece of paper with a twist. It turns a two sided plane into a geometric shape with one side and one edge.

I agree that some problems can't be solved. Some problems we have yet to prove unsolvable.

@richwicks Looking forward to meeting up with you in person again one of these days.

Onvacation says

richwicks says

I contend there is no solution, but it's a good problem for students. Some problems can't be solved. That's a lesson a lot of people never learn.

No planar solution.

Moebius could do it. One piece of paper with a twist. It turns a two sided plane into a geometric shape with one side and one edge.

I agree that some problems can't be solved. Some problems we have yet to prove unsolvable.

@richwicks Looking forward to meeting up with you in person again one of these days.

We'll meet up. I'm curious as to the divergence between my generation and your generation, and generation Y.

I think the "generation gap" is about how we've been propagandized differently. I THINK I'm outside of that sphere however, I've thought that before to realize I was not. The generation gap is imposed upon us, top down, it's not natural.

Onvacation says

@richwicks Looking forward to meeting up with you in person again one of these days.

I'd be up for that too.

Patrick says

Onvacation says

@richwicks Looking forward to meeting up with you in person again one of these days.

I'd be up for that too.

I think we're long overdue for some sort of PatNet meetup.

GreaterNYCDude says

Patrick says

Onvacation says

@richwicks Looking forward to meeting up with you in person again one of these days.

I'd be up for that too.

I think we're long overdue for some sort of PatNet meetup.

We need some closer to LA.

well if we are looking at the theoretical solutions, why not sett up the electricity with a wireless transmission system? lol

for all of the gang that likes puzzles, have you ever tried to explain the MONTY HALL PROBLEM to anyone? It can get frustrating and hilarious.

komputodo says

for all of the gang that likes puzzles, have you ever tried to explain the MONTY HALL PROBLEM to anyone? It can get frustrating and hilarious.

It's still my favorite one because it took me a while to grapple - of course the math clearly shows the 2/3 to 1/3 probability ratio after one door has been opened (by the game master in the know that the prize is not behind the door they chose top open) but the brain has a hard time to accept it. Many people won't believe it, but it's easier explained if you start with 1000 doors.

richwicks says

Onvacation says

Tenpoundbass says

If you can project it onto another dimension, and that is accepted as a valid solution. Then all solutions are valid. As it's only a thought exercise, with no one true answer.

Only solutions that obey the constraints are correct. one piece of paper, front and back, no utility lines cross, all houses get all utilities.

Demonstrate it.

Tenpoundbass says

Don't leave me hanging, does this solution conform to the requirements?

One of Mr. Schultz's constraints was you could not go through the paper.

From: https://www.archimedes-lab.org/How_to_Solve/Water_gas.html

*Category:* Topological graph theory.
*Name:* Water Gas and Electricity puzzle, Three Utilities puzzle, or Three Cottage problem.
*Material:* Pencil, piece of paper.
*Configuration:* There are three houses (or squares) drawn on paper and below them three smaller squares [or circles] representing gas, water, and electricity suppliers.
*Aim of the game:* Draw lines to get each utility into every house, without crossing over any line.
*Origin of the puzzle:* Unknown. Sam Loyd claimed that he invented this recreational math problem about 1903. But this puzzle is MUCH older than electric lighting or even gas, Loyd most probably modified a previously existing puzzle.
*Editor's notice:* This is a pure abstract mathematical puzzle that imposes constraints that would not be issues in a practical engineering scenario... As such, this puzzle CANNOT be solved.

The only way to solve this problem that I know of is to twist the paper into a moebius strip. Technically doing this turns the two dimensional paper into a three dimensional geometric shape, albeit a strange one with one side and one edge.

I remembered this problem because an easy way to create graphs with Excel came to me in a dream.

The solution to the "water/gas/electricity" problem came to me in a dream after I studied graph theory and topology when I was a math major in college.

Dreams are cool!

Onvacation says

*Editor's notice:* This is a pure abstract mathematical puzzle that imposes constraints that would not be issues in a practical engineering scenario... As such, this puzzle CANNOT be solved.

Then why set it up as 3 houses with gas, elec, and water meters? why not just 3 circles and three squares?

mell says

It's still my favorite one because it took me a while to grapple - of course the math clearly shows the 2/3 to 1/3 probability ratio after one door has been opened (by the game master in the know that the prize is not behind the door they chose top open) but the brain has a hard time to accept it. Many people won't believe it, but it's easier explained if you start with 1000 doors.

Would the odds change if the player instead of Monty opened the door(s) randomly with 1000 doors and just by sheer coincidence just happened to leave 1 winner and 1 loser?

komputodo says

Then why set it up as 3 houses with gas, elec, and water meters? why not just 3 circles and three squares?

For the same reason they don't explicitly teach second graders negative numbers. Graph theory is a little too abstract for ninth graders.

Math is often years ahead of technology, sometimes centuries. If E=MC^2, M=E/C^2; try wrapping your brain around that. The mathematical field of topology explains wormholes and theoretically explains the possibility of faster than light travel, though I don't even pretend to understand how.

I once twisted the insides of a floppy disk into a Möbius strip and hung it on my cubical wall with the label: single-sided floppy disk. That got a chuckle from co-workers.

Onvacation says

The mathematical field of topology explains wormholes and theoretically explains the possibility of faster than light travel, though I don't even pretend to understand how.

That's where math fails the Eggheads. Just because math fits a scenario, sometimes it is completely useless outside of those bounds.
A great example is Time. Out depiction of time through a math system of 12 values with 60 segments, parsed in 24 hour dimensions, spread out over 365 Days, among many time zones, has absolutely no value anywhere else in the cosmos, other than to explain our planets rotation around the sun. And it's sloppy at best, and has to be reworked periodically, with subtractions here and there.

It's possible that a wormhole only works on paper, and has no value in the Universe.

Onvacation says

komputodo says

Then why set it up as 3 houses with gas, elec, and water meters? why not just 3 circles and three squares?

For the same reason they don't explicitly teach second graders negative numbers. Graph theory is a little too abstract for ninth graders.

Math is often years ahead of technology, sometimes centuries. If E=MC^2, M=E/C^2; try wrapping your brain around that. The mathematical field of topology explains wormholes and theoretically explains the possibility of faster than light travel, though I don't even pretend to understand how.

There are other ways to achieve faster than light travel that are less esoteric such as riding inside a gravitational wave while having your own propulsion adding to the total speed. Just sayin ;)