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Indeed, that is the cause/effect argument. In making that argument he is saying that time cannot be a plane because it is too upsetting, or alternatively, he cannot comprehend it.

Yep, 'way too upsetting, A-G!

Yet perhaps the 4D block -- 3S + 1T -- can only be viewed as a plane from the fifth dimension (T the second). That way, since we "live" and "perceive" in 4D, we don't "notice" the brane-like quality of 4D. And since we don't "notice it," it is not "real" for us; that is, from our "perspective." Meaning Time is still perceived as linear and unidirectional for us. So we continue to experience time as a movement from past to present to future. And causation appears to be unaffected and unaffectable.

Just a wild speculation.... I'm reminded of Heraclitus' observation: "Nature loves to hide."

Thank you so much for your reply!

And since we don't "notice it," it is not "real" for us; that is, from our "perspective."

So true. So very true. It reminds me of the first time I SCUBA'ed in open water, the visibility was less than 10 feet. Without thinking - i.e. that bubbles from the regulator rise - a newbie could drown. Jeepers!

PatrickHenry and I had quite a sidebar going on flying "by the seat of the pants." With super speeds, night flying and poor visibility - the pilot has to ignore his 'senses' and pay attention to the avionics.

I believe geometric physics puts the scientist in the same quandary. To understand it, he must ignore his physical senses.