以下是其他一些物理学家的评论：
Rajesh Gopakumar：“物理理论表明这些泡沫无法以超过光速的速度扩张，但是宇宙膨胀能把一些地区带到没有泡沫的地方”
Peter Woit的评论“第一次听到这件事我觉得Sen不可能这么傻, 这应该是一个恶作剧. 为了表明arxiv-hep版版主是多么的笨——他们只要看到关于多元宇宙(multiverse)和弦论地景(landscape)的东西都会放行，无论这个文章多么荒谬。 有些人认为Sen的账号被盗发了这个文章,还有人认为Sen本人搞了这个恶作剧，因为他受够了这些地景的东西”
还有人认为这是四月1日的笑话，因为Sen的文章发表在3月27日。。

Sen自己的回复：
A note (April 6, 2015)
A few days ago I wrote an essay with the title `Riding Gravity Away from Doomsday'. In this essay I discussed the best possible future course of action for the humankind to prolong its life given two assumptions: 1) that our universe is not absolutely stable and could undergo a phase transition in the future, and 2) that the accelerated expansion of the universe that we see today is due to a cosmological constant. The first one is a theoretical possibility that has been discussed since 1970's by many people and current experimental knowledge could at best put an upper bound of one in ten billion per year to the probability of such an event. The second one is the most widely accepted interpretation of the observed expansion rate of the universe although there are certainly alternative proposals. Both assumptions are natural in string theory, but can be discussed independently of string theory.
Few days after I submitted the essay to the arXiv, one of my colleagues drew my attention to a blog where some discussion on this essay had appeared. Upon visiting the blog, I was amused to see the passionate attack on eternal inflation and the multiverse that the essay had generated, while the essay itself was based only on the assumptions stated above and the standard rules of classical general theory of relativity. Indeed, a word search shows that none of the words eternal, inflation or multiverse appear anywhere in the abstract, text or the figure captions. Of course, many of the physical and mathematical results used in this essay are borrowed from the corresponding results in eternal inflation since our universe is now entering the same kind of accelerated expansion phase that is postulated to exist during inflation.
I do hope that some time in the future I'll be able to make some useful contribution to the subject of multiverse and eternal inflation, but this essay does not count as one such contribution.
The relevant links can be found below.
My article: `Riding Gravity Away from Doomsday'.
The blog with comments on the article.(http://www.math.columbia.edu/~woit/wordpress/?p=7626)

这哥们得过breakthrough prize，居然还有这么清奇的脑洞。。也是醉了

弦论制造世界末日，弦论学家教你逃离世界末日。

制造宇宙也并不是不可能

没关系，我等不到世界末日那天。

一大波滑稽来袭

滴滴滴

脑洞大开，不得不high

利用warp drive效果更好［滑稽］

ashoke真是神人，真的佩服，和他聊过几次。。。。口音也到了神界

哇喔，哪里摘来的文章吖