I cannot imagine it will ever happen but I'd like to see the spec precisely defined in terms of core "axiomatic" functionality (JS, layout engine, core CSS rules), and peripheral functionality built on the core functionality.
The core functionality would have a precise (as possible) and extensive definition with an agreed test suite encoding the expected behaviour (as much as possible).
This would allow development of a shared implementation of the peripheral layer, while browser innovation could continue on the core functionality (JS and rendering performance, battery usage etc), and on innovations in the UI.
FWIW. My wife is Japanese and I lived in Japan through Fukushima as well.
A lot of people seem to think that Japan must somehow have a higher infection rate but I haven't seen any evidence that this is true.
For all the docileness of the mainstream media and the lame-duck politics it is a free and democratic society. The government couldn't hide a mass outbreak of corona virus anymore than it has been able to hide any other scandal. In fact almost certainly less given the levels of public interest.
The Ministry of Health and Welfare publishes updated statistics daily (https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/0000164708_... -- in Japanese). looking at the current stats published there's not really any obvious problems. They're seeing about an 8% positive rate on corona virus tests and 1.8% of those with confirmed infections have died. This is well below the rates seen in Iran, Italy, America and China suggesting they've been relatively thorough in catching infections, although less so than South Korea.
In truth the Japanese healthcare system is probably the best in the world at providing population level care. Since long before Corona virus standards of hygiene have been very high. Masks and hand sanitizer bottles have been a common site for a long time, hand washing and gargling is heavily encouraged, and direct contact (hand shakes, hugs, back pats .etc.) is very restrained.
Whats more for all the criticism it copped the Japanese government has been pretty decisive in responding to corona virus. It's shut down schools. It's shut down public spaces (museums, libraries .etc.). It's discouraged crowds. It's encourage working from home. It's restricted travel from hot spots. It's isolated those with infections. Also most age homes seem to have gone into lock down weeks ago.
I imagine that even if Facebook goes the data will be bundled up and sold to third parties - a somewhat scary thought. Not that Facebook has been a good steward of the data so far but its hard to imagine vulturous third parties being better.
Without more context it seems hard to make conclusions from the data presented.
In terms of the raw figures both Daily Active Users and Monthly Active Users are up. However Monthly Active Users has increased at a faster rate than Daily Active Users, therefore user engagement which is defined as the ratio of daily active users to monthly active users has fallen.
Is this because existing users have reduced engagement with the platform, while Facebook continues to signup new users, or is it because the new users Facebook is signing up are not as engaged in the platform, or a combination of both?
For example maybe Facebook is 'hacking' its user growth figures by signing up marginal users at the cost of engagement.
Interesting anecdote about FastMail, I was previously C++ dev lead at a company with a large (1~2 mloc) legacy code base. Most of the C++ code was layers of mess but there was also a very well engineered core. One name consistently appeared in comments on these well engineered sections. Out of curiosity one day I decided to search LinkedIn and see if I could find the guy behind this shining light of engineering competence. Turns out he went on to found (/cofound -- not particularly sure of the details) Fastmail.
I find it very satisfying that a good engineer went on to succeed and would definitely trust the engineering competence of Fastmail.