How can any client-side rendered terms and conditions be considered binding for software licensing?
<p>Basically, for many websites, as well as basically all software one installs, the sign-up or installation process requires you check a checkbox or click a button saying "I accept XXX terms and conditions"/"I accept the licensing terms".</p>

<p><a href="https://i.stack.imgur.com/JN3m5.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/JN3m5.png" alt="enter image description here"></a><br>
<sup>Here is the account creation page from gmail as an example.</sup></p>

<p>I'm curious how this can be considered enforceable, considering that the person "agreeing" to the dialog can arbitrarily manipulate the contents of the agreement terms:    </p>

<p><a href="https://i.stack.imgur.com/DX830.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/DX830.png" alt="enter image description here"></a><br>
<sup>30 seconds with the browser developer tools later. Note that you can still create an account exactly as you would normally, despite the changes!</sup></p>

<p>It's been my impression that the explicit agreement indicated by the checkbox or clicking of "agree" is the action that the enforcability of the terms of service hinge on [<a href="https://en.wikipedia.org/wiki/Clickwrap" rel="nofollow noreferrer">1</a>]. </p>

<p>Is this correct, and if so, how can contracts like this be considered enforcable? While it takes slightly more effort, the click-wrapper on most software can be manipulated in a similar manner. </p>

<p>OK, so you understand that clickwraps do create enforceable contracts.</p>

<blockquote>
  <p>the person "agreeing" to the dialog can arbitrarily manipulate the contents of the agreement terms</p>
</blockquote>

<p>So what? I can do a similar thing with a pen and paper agreement. You send me an agreement, I tell you I accept but <em>secretly</em> I have changed it. Well, guess what, when this ends up in court the judge won't care if I wiped my ass with it - I <em>communicated</em> my acceptance of <em>your</em> terms; therefore that is what I accepted.</p>

<p>Under the hood, Google can show what the HTML was that their server sent to you and the http response that you sent back. They said "Do you accept?" you sent back "yes", deal done. What you did with the html in your computer does not matter one iota; just like what you did with pen and ink terms would.</p>

licensing software