Hidden science assumptions 11-07-23

From Peter Woit’s The Hype Goes On:

Aaron Sheldon Says:
April 24th, 2006 at 6:48 pm Um…Is our knowledge of red-shift nearly anywhere as reliable as our knowledge of labratory H2 absorbtion lines? Isn’t it a bit like comparing apples to oranges?I mean, we measure red-shift by assuming the relationship between spectral lines remains constant. But [...]

Cosmologists says age of universe can change

The link: Mankind ’shortening the universe’s life’
Journalists and cosmologists use words like “theory”, “could”, etc. to speak of something as fact, though they would deny they’re saying it’s fact other than if someone challenges it, which they would argue that it’s fact though it’s not.