What fixed costs of the grid? In Northern Virginia, we’re constantly adding substations and transmission lines because the grid isn’t a fixed cost when you’re building data centers constantly; it quickly becomes a variable cost.
> Part of the reason that China’s stock market trends sideways is that everyone’s profits are competed away. Big Tech might enjoy the monopolistic success smiled upon by Peter Thiel, coming almost to genteel agreements not to tread too hard upon each other’s business lines. Chinese firms have to fight it out in a rough-and-tumble environment, expanding all the time into each other’s core businesses, taking Jeff “your margin is my opportunity” Bezos with seriousness.
In part, you’re right, but there’s a practical difference between mocking and a good dummy version of a service. Take DynamoDB local as an example: you can insert items and they persist, delete items, delete tables, etc. Or in the Ruby on Rails world, one often would use SQLite as a local database for tests even if using a different DB in production.
Going further, there’s the whole test containers movement of having a real version of your dependency present for your tests. Of course, in a microservices world, bringing up the whole network of dependencies is extremely complicated and likely not warranted.
I use test containers and similar methods to test against a "real" db, but I also use mocks. For example to mock the response of a third party api, can't very well spin that up in a test container. Nother example is simply time stamps. Can't really test time related stuff without mocking a timestamp provider.
It is a hassle a lot of the time, but I see it as a necessary evil.
Major damage tends to cause a much larger immune response than a vaccination. That said, they do have therapeutic cancer vaccines that present proteins from cancer (sometimes patient-specific) with adjuvants to help stimulate the immune response.
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