David Heath
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davidheath.org
David Heath
@davidheath.org
700 followers 730 following 170 posts
Trying to make things work better
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davidheath.org
This graph shows the scale of change since 1999. Cycling 6 times bigger today than in 1999!
Line graph showing motor vehicle and cycle volumes in the City of London from 1999 to 2024. The dark blue line represents motor vehicles, which decreased from 198,000 in 1999 to 59,000 in 2024. The yellow line represents cycles, increasing from 8,000 in 1999 to 52,000 in 2024. Key events are marked along the timeline: Congestion Charge Zone Introduction (2003), Global Recession (2008), Cycle Superhighways Opened (2015), Global Pandemic (2020), and Dockless Cycling Boom (2023). A note above the graph states that cycling increased sixfold while motor vehicle numbers dropped by 70% over the period.
April 25, 2025 at 6:35 AM
davidheath.org
gosh, just tried this out
Google search: "two trees don't make an apple meaning" AI Overview: The saying "two trees don't make an apple" is a metaphorical expression that means two things alone do not make a whole or a complete thing, even if they seem to share a relationship. It highlights the need for something else, whether it's an additional ingredient, a different perspective, or a different approach, to create the desired outcome. Here's a more detailed explanation: It's a concept of completeness: The phrase implies that even if two things are related or share some characteristics, they are incomplete on their own. remaining text is hidden under a "Show more" button
April 24, 2025 at 8:26 AM
davidheath.org
Headline: More on the meaning of “reciprocal tariffs”

You won’t believe how they (maybe) came up with the numbers

www.ft.com/content/e025...
Quoted text from the Financial Times: Here's what the White House and its crack team of trade investigators seems to have done: Take the US's goods trade deficit with any particular country, and divide it by the total amount of goods imported from that country. Cut that percentage in half, and there's the US's "reciprocal" tariff rate. We can confirm this fits* the numbers for the first 24 countries listed, which we checked by hand because we could hardly believe it and also because we refuse to use Al for anything. Kudos to @orthonormalist and James Surowiecki, who both put it together, more or less. Let's look at Bangladesh as an example. The US imported $8.4bn of goods from Bangladesh in 2024, giving it a $6.2bn trade deficit with the country. 6.2 divided by 8.4 is 0.738.
April 3, 2025 at 7:25 AM
davidheath.org
First 5k under 30 mins! 🏃‍♂️
Screenshot from Runkeeper app showing a circular route around a park. Run stats 5.13 km, time 29:03, pace 5:40. A man with red knitted beanie hat, a green fleece, a grey and brown beard looks hot and out of breath. Standing on grassy/dirt path in a park with trees and a field in the distance.
March 24, 2025 at 8:43 AM
davidheath.org
SD logic foundational premises
S-D logic axioms and foundational premises Axiom 1/FP1 Service is the fundamental basis of exchange. FP2 Indirect exchange masks the fundamental basis of exchange. FP3 Goods are a distribution mechanism for service provision. FP4 Operant resources are the fundamental source of strategic benefit. FP5 All economies are service economies. Axiom 2/FP6 Value is cocreated by multiple actors, always including the beneficiary. FP7 Actors cannot deliver value but can participate in the creation and offering of value propositions. FP8 A service-centered view is inherently customer oriented and relational. Axiom 3/FP9 All social and economic actors are resource integrators. Axiom 4/FP10 Value is always uniquely and phenomenologically determined by the beneficiary. Axiom 5/FP11 Value cocreation is coordinated through actor-generated institutions and institutional arrangements.
March 15, 2025 at 7:23 PM
davidheath.org
A bright vending machine reads “UV-C Sterilised” “Refill from your phone” “Upgrade” “2x filtered” “H2-OH NO” above a credit card reader device). A touch screen displays a plethora of different options for water refills. Brightly coloured options propose 3x filtered chilled 500ml - 45p, 750ml - 60p, 1000ml - 75p, At the bottom in dull grey “free tap water” 500ml, 750ml, 1000ml
February 6, 2025 at 9:09 PM
davidheath.org
Some expert dark patterns going on here
A prominent sign in a train station reads “free drinking water”
February 6, 2025 at 9:09 PM
davidheath.org
See you soon #ukgc25
A picture of David standing on a train platform wearing a tweed flat cap, rust woolen scarf, grey brown jacket and a blue jumper. The sky is overcast but bright.
January 18, 2025 at 9:01 AM
davidheath.org
Great to catch up Himal!
Himal wearing his green wide brimmed hat and David in green fleece smiling in the evening sunshine standing in front of the oxo tower with blue sky and white clouds
October 19, 2024 at 5:08 PM
davidheath.org
Recovering from Covid, came down with a fever Monday night and was wiped out for two days. Feeling a lot better now and managed to get out for a walk up Bamford edge yesterday afternoon. The rain gave way to some blue skies.
Wide angle shot from the top of Bamford edge. Red autumn bracken in the foreground atop the hill. Ladybower reservoir’s silver blue in the middle distance. The peak of Win hill can just be seen silhouetted behind. Gold sunshine peeps through fluffy grey and white clouds and vibrant blue sky.
October 13, 2024 at 12:01 PM
davidheath.org
Graves park
Grey-white fluffy clouds fill an immense sky, flecked with blue. A thin landscape strip of grass and trees is illuminated by the pale gold glimmer of an autumn evening
October 11, 2024 at 3:44 PM
davidheath.org
Just did this. It was defaulted “on”
Screenshot of a setting page in linked in saying “Data for Generative AI Improvement, Use my data for training content creation AI models”. The setting in the screenshot is toggled on.
September 18, 2024 at 10:27 PM
davidheath.org
Ventnor beach, Isle of Wight
Red and green tropical plants in the foreground. A road winds down to a Victorian parade with Bandstand. Sun shines on blue sea water and a shingle beach. In the distance the coastline continues into green vegetation rolling down the cliff edge to the sea.
August 30, 2024 at 12:57 PM