London day rates I've seen for contractors are more like 700 - 900/day on average at places that pay a bit better and 1000+ for specialists. And base salaries I've seen advertised for senior developers at funded startups (e.g. Wagestream, Truelayer) are more like 105k now (more for higher levelings - i.e. Principal/Staff).
Interestingly despite years of negative pieces on Uber from journalists who have never liked Uber, its net favorability is still very close to Apple's:
A former Obama campaign official is claiming that Facebook knowingly allowed them to mine massive amounts of Facebook data — more than they would’ve allowed someone else to do — because they were supportive of the campaign.
In a Sunday tweet thread, Carol Davidsen, former director of integration and media analytics for Obama for America, said the 2012 campaign led Facebook to “suck out the whole social graph” and target potential voters. They would then use that data to do things like append their email lists.
When Facebook found out what they were doing, they were “surprised,” she said. But she also claimed they didn’t stop them once they found out:
Is it possible this is also in part due to EMFs from their phones (and environment) and circadian rhythm disturbances from screens?
Some studies suggest the radiation can be risky to kids:
Christ A, Gosselin MC, Christopoulou M, K’uhn S, & Kuster N. (2010 Jan.). Age dependent tissue-specific exposure of cell phone users. Physics in Medicine and Biology, 55: 1767-1783. Retrieved from http://iopscience.iop.org/0031-9155/55/7/001/pdf/0031-9155_5....
Hardell L, Carlberg M, Hansson Mild K. (2009) Epidemiological evidence for an association between use of wireless phones an tumor diseases. Pathophysiology 16 (2-3): 113-122.]
Hardell L, Hansson Mild K, Carlberg M, Hallquist A. (2004) Cellular and cordless telephones and the association with brain tumours in different age group. Archives of Environmental Health 59 (3): 132-137.
Divan HA, Kheifets L, Obel C, Olsen J. (2008) Prenatal and Postnatal Exposure to Cell Phone Use and Behavioral Problems in Children. Epidemiology 19(4): 523-529.
Byun, YH, Ha, M, Kwon, HJ et al (2013 Mar 21). Mobile phone use, blood lead levels, and attention deficit hyperactivity symptoms in children: a longitudinal study. PLoS One. 2013;8(3):e59742. doi: 10.1371/journal.pone.0059742.
Morgan, L, Kesari, S, Davis, D (2014). Why children absorb more microwave radiation than adults: The consequences. Journal of Microscopy and Ultrastructure 2(4): 197-204. doi:10.1016/j.jmau.2014.06.005
It can be politically incorrect to state that some people are more physically attractive than others, but in the “is beauty objective” debate, this seems to be at least a sign that beauty is not totally subjective?
Interesting tidbits: they advise to never carry cellphones in your pocket, and that cell phones can lead to increased risk for brain cancer, low sperm count, headaches, impaired memory.
As to day rates I think it's rather about companies willing to pay a bit more to get better contractors rather than any specific stack.