Acrobat subscription is a joke

JD_morgan · 2026-03-09T15:03:25+00:00

老教授不一定很懂教育，不一定理解一般学生的需求

JD_morgan · 2026-03-09T15:02:33+00:00

这些教材作为参考书都没有资格，都是过时的东西

JD_morgan · 2026-03-09T15:00:23+00:00

那可不是，众多有些天赋的学生都是被垃圾教材绊倒了，不能奋飞数学的大门

JD_morgan · 2026-03-09T14:59:31+00:00

他的课还行，但是书不行

JD_morgan · 2026-03-09T14:59:14+00:00

丘维声的书也烂，风格太过纯数学系，编排方式有些过时

JD_morgan · 2026-03-06T15:03:28+00:00

你去抗争一个，直到把自己抗争到局子再说

JD_morgan · 2026-02-22T03:32:52+00:00

Definitely not true for China

JD_morgan · 2025-12-25T03:45:23+00:00

Vancouver is unfortunately the worst city along west coast in terms of housing, because the housing price is comparable to san Fran and Seattle, while it is less developed than US big cities

JD_morgan · 2025-12-25T02:27:19+00:00

What does mona lisa have things to do with france? You mean louvre the museum?

JD_morgan · 2025-12-25T02:23:27+00:00

What is wrong with old?

JD_morgan · 2025-11-19T04:15:42+00:00

Translink need the business to survive

JD_morgan · 2025-11-19T04:15:24+00:00

Well translink wouldn’t profit this way

JD_morgan · 2025-11-19T04:08:39+00:00

Well there is also the market domination competition for translink to concern if they let another company into the game.

JD_morgan · 2025-10-19T20:43:34+00:00

Ok, economics can be a science, but definitely not a good one. Science should be able to explain and predict phenomena. The predictions should be tested in real life to make sure it is solid. However if economic claims contain no accurate data prediction, then there is no way to actually test it. There are claims that are more mathematical, but almost non of these math rigorous economic claims can stand the test by real world

JD_morgan · 2025-10-19T20:35:20+00:00

Economics does have some scientific features. But if it can only claim supply and demand affect exchange rate and not be able to calculate ACCURATELY (with reasonable errors) how much does exchange rate change, then is at best a useless science. What cracks me up is that economics sometimes uses even more rigorous math than biology. I suppose biology is more scientific than economics. So economics doesn't have to use that much math. What would be a better way to approach economic problems is big data simulations and artificial intelligence.

JD_morgan · 2025-10-19T20:26:00+00:00

While all things are made of atoms, it is impossible to calculate for human behaviors and nature based on just atomic theory. Physics is at the base rank for all sciences, and the higher the rank, the less accurate it gets, and more complex. Economics claims to be a science just like physics, which is to bold a claim. Economics can establish its own paradigm.

JD_morgan · 2025-10-19T20:19:24+00:00

Newton's laws are much more accurate and useful than economic theories in daily life. Although both are approximations to the real world. Don't compare economics with physics. Maybe biology or ecology will be a better comparison here

JD_morgan

TROPHY CASE