<html><head></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:13px"><div id="yui_3_16_0_ym19_1_1509012453810_5737" dir="ltr">IMO experiment only rejects models. Thus, several different models may not be rejected by an experiment. So the challenge is to have a model with the fewest experimental rejections. For example, entanglement experiments reject SR. All the currently popular models have experiments that reject them. Our understanding grows when a new model is not rejected by more observations. This is done by creating a model that reduces to current models (GR and QM) when limiting parameters are considered. That the new model may explain some of the experiment/observations currently rejected helps. IMO ad hoc changes to current models such as inflation, dark matter, and wave/particle duality only make advance more difficult. </div><div id="yui_3_16_0_ym19_1_1509012453810_5737"><br></div><div id="yui_3_16_0_ym19_1_1509012453810_5737">Causation is a postulate. I like the emergent type model rather than the reductionist view. </div><div id="yui_3_16_0_ym19_1_1509012453810_5737"><br></div><div id="yui_3_16_0_ym19_1_1509012453810_5737">Hodge</div></div></body></html>