Now you are in the subtree of Finance public knowledge tree. 

Biggest problems in Finance - MT

happiness and economics

MT - FLOW and relations to other concepts

evolution theory, information, hierarchy - 21st century

Kolmogorov-Shannon, see Manin
Gleick - Information - "islands of meaning in the sea of data"

liquidity

a) funding
b) any asset as a tradable security

leverage, etc

speed of moves - Derman time
https://pages.nes.ru/aobizhaeva/Kyle-Obizhaeva-ECTA-2016-Invariance-with-Supplement.pdf
Leverage neutrality?

information theory (Kolmogorov-Shannon), meaning, and emotions

collective markets (wise for short-term) versus individual emotions

neuroeconomics

evolutionary role of derivatives

derivatives as the tool of human progress in Finance

transition to a new financial system

see also Open questions in Financial System