Just rename your instinct for pedantry "preference for clear and precise expression" and hoist your freak flag :-) Socially awkward on LW is a weird beast anyway :-D
To return to the original point, how about "Timing markets successfully requires either a rare (and VERY well-compensated) skill or access to some relevant non-public information. There is a strong prior that you don't have any of those so convincing evidence is required to overcome it."..?
Just rename your instinct for pedantry "preference for clear and precise expression"
Including excessive amounts of tangential qualifications and attempting to make statements immune to misinterpretation tends to make statements less clear.
To return to the original point, how about "Timing markets successfully requires either a rare (and VERY well-compensated) skill or access to some relevant non-public information. There is a strong prior that you don't have any of those so convincing evidence is required to overcome it."..?
That...
P/S/A: There are single sentences which can create life-changing amounts of difference.