andrewwhartion's comments

andrewwhartion | 9 years ago | on: What fossil fuels are doing to our oceans

I think there's something in this...

The person behind the cash register could even ask, "Would you like to make your 'gas/petrol/fuel' today carbon-neutral for an extra $2.45?".

I can see that working with very little capital. It gets sold the same way as the Snickers bars next to the checkout.

andrewwhartion | 9 years ago | on: What fossil fuels are doing to our oceans

Quick 'back of the envelope' (literally) calculations:

Toyota Camry [0] Dual VVT-i engine gets 7.9L/100km and 183gm/km emissions. That roughly works out as 2.3kg CO2 per 1L petrol.

Therefore, a tonne of CO2 is produced for every ~430L petrol. Petrol is around AUD $1.40/L, so about AUD $600 of petrol.

Carbon credits [1] are worth about $14 euros per tonne of CO2, which is say AUD $19.

Therefore 'carbon neutral' petrol adds about AUD$20 to AUD$600 worth of fuel, or about 3-4%.

Sound about right? I could stomach that, considering the fuels price goes up and down all the time anyway...

[0] http://www.toyota.com.au/camry/features/economy-and-environm...

[1] http://www.goldstandard.org/blog-item/carbon-pricing-what-ca...

EDIT: formatting...

andrewwhartion | 9 years ago | on: Are Chinese and Russian Developers More Skilled Than Americans?

I've looked at these challenges and considered trying them out, but there's an opportunity cost involved in doing them.

I'm sure they're of some value, but I prefer to spend my time that I have for professional learning either reading books or articles, learning new tools or trying out new tools and skills on low risk hobby projects.

I find I get far more value from this than trying to solve challenges I virtually never encounter in the 'real world'. But then again, maybe I'm just not the target market...

andrewwhartion | 9 years ago | on: Request for Startups: News, Jobs, and Democracy

I think there's massive scope for improving the delivery of educational material, but most of my ideas have been related to later secondary education and university and to what I as a learner have wanted, not what the teacher/educator has wanted.

It's been an open question for me how to improve education in earlier years where there's probably less scope for self-learning, and more focus should be on how to improve the teachers' efficiency and effectiveness. Since my own kids are starting school now, these earlier years have taken on new significance, but since I don't have a background in education, I haven't known where to start. I'm more at the point of "How can I help?!", since I have very little visibility into the frustrations that teachers experience on a day-to-day basis, but I can build software, if software can be part of the solution.

Sent you an email, but I'm sure there are others who would love to be involved in the discussion...

andrewwhartion | 9 years ago | on: No Spanking, No Time-Out, No Problems

I think it's also that a dog will also respond differently to a third party (the trainer) than how they respond to the owner with whom they already have a relationship. The owner could use the exact same techniques as the trainer, but the dog will respond differently.

Same thing as why organizational change can be more effective when lead by an external change agent than an internal one.

andrewwhartion | 9 years ago | on: Humble Book Bundle: Unix

While not really related to specifying multiple sizes, PDFs do have the concept of an artbox, which could be used by the PDF author to indicate the area of the page that actually contains content.

A useful feature of a PDF reader on these devices could be to display only this area with a smaller, perhaps user defined, margin.

This at least would fix the 'huge margin' problem.

andrewwhartion | 9 years ago | on: Fewer than 3% of cars sold in the U.S. have manual transmissions

> It's well known that accelerating rather quickly to your cruise speed is the optimal strategy for fuel efficiency, hence the reason to switch from 3rd to 5th gear directly.

I don't mean to be pedantic, but I think your logic is backwards here, ie. It's well known that 5th (top) gear is the most fuel efficient, hence the reason to accelerate to it rather quickly (the optimal rate would vary between cars), I think would be more reasonable.

I don't think the cruise speed factors into it, and neither does switching from 3rd to 5th, unless it's part of the strategy to get to 5th faster.

But then again, I never realised that accelerating harder to get to 5th faster is actually more fuel efficient [1], so thanks for the heads up!

[1] http://www.popularmechanics.com/cars/a6827/6-driving-tactics...

andrewwhartion | 9 years ago | on: Obituary: Great Barrier Reef

Sure, but when do you call time of death? (It's a rhetorical question)

I guess I'm happy to grant the author a little artistic license to make his point.

andrewwhartion | 9 years ago | on: Obituary: Great Barrier Reef

To quote the article...

"With no force on earth capable of preventing the oceans from continuing to warm and acidify for centuries to come, Veron had no illusions about the future."

I feel you're missing the point of the article. The reality is that the reef effectively has a terminal illness and there's little anyone can do now.

Stage 5. Acceptance.

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