Are we still ignoring data in making covid-related decisions?
From the early days of Covid, I have been questioning the wisdom of lockdown. In a post I wrote in December 2020, I said the following: “For one, I question the wisdom...
Category
visulization
Zillow’s Failure in Housing Flipping is a Classic Example of Ignoring Bottlenecks and Variabilities
By now, we have all heard the story of Zillow losing more than $550 million doing house-flipping. Its CEO blamed it on its forecasting model that produced house-buying prices...
Port of LA: Storage Space is the culprit?
Recently I read about the saga at the Port of LA. According to Ryan Petersen, the chief executive of logistics company Flexport, the real bottleneck at the Port of LA was...
Why Supply Chain Delays are Multi-faceted: A Mathematical Explanations (Without the Heavy Math)
Paul Krugman recently penned an excellent article explaining why we see the supply chain snarls in New York Times. It mentioned a number of factors: The US consumers are...
Understanding CO2 Emissions for different freight transport modes (renewable as well as non-renewable)
One of the most important questions to ask in transitioning to renewable modes of transport is simply: How much less CO2 are we going to emit by switching to renewables? The...
SHOULD I BUY OR LEASE A TESLA? PART 2: Total loan cost (when you are sure about the depreciation)
In a previous post, I calculated the total cost of leasing a Tesla, using my own experience as an example. Before we move on to the buying option, let me mention one important...
How to draw ranking data properly
A slight problem with drawing data on ranking is how we normally think about ranking. We normally associate “#1” as the best, and “#10” as worse...
Simulation: Is demand equal to sales? (Part II, and why is there a Loch Ness Monster?)
In an earlier post, we discussed the difference between demand and sales using a simulation exercise. Now the question is: How can we visualize the difference? To start off,...
Carbon foot-printing problem is first of all an information problem
Carbon foot-printing problem is, first of all, an information problem. In a recent report released by World Economic Forum, the first challenge in reducing carbon emission is...
Road Transportation is the Single Largest Decarbonization Opportunity with a Clear Path Forward
My apology for the unwieldy title. But I chose the long title to highlight one thing: Although there are many decarbonization opportunities with large impact, road...