Stocks showed surprising strength Wednesday, all of it attributed by the usual dipsticks to supposedly encouraging news about — you guessed it — trade talks with China. Don’t be fooled, for the rally would have happened anyway. It is just a bull market doing its inexplicable thing, irrespective of whatever Trump happens to be tweeting at a given moment. The tweets may drive stocks silly for a few minutes, or perhaps catalyze an uptrend or downtrend that was about to happen anyway, but they have little effect on the run-ups to new all-time highs that have been recurring with regular frequency lately.