Biden argues that he is the most qualified candidate to lead the country and defeat Trump, citing his foreign policy successes, ability to unite allies, and enthusiasm among supporters. While he raises valid points about his accomplishments, he uses red herrings to avoid directly addressing concerns about his age and cognitive abilities, which weakens the overall validity of his arguments.

1. red herring • Instead of addressing the substance of Stephanopoulos's point about low approval ratings, Biden immediately attacks Trump's character.

STEPHANOPOULOS: The number of Americans who think you're too old to serve has doubled since 2020. Wouldn't a clear-eyed political calculus tell you that it's gonna be much tougher to win in 2024?.

PRESIDENT JOE BIDEN: Not when you're running against a pathological liar. Not when he hadn't been challenged in a way that he's about to be challenged.

While Trump's honesty is a valid concern, it's a fallacy to use it as the direct rebuttal to a statistical point about Biden's own standing. It does not address the original question regarding the challenges of winning the 2024 election based on public perception of his age.

There are numerous instances of this sort of red herring. Another is when Stephanopoulos asks about the personal toll of the presidency, but Biden deflects to his past successes and his optimism about the country's future.

STEPHANOPOULOS: Are you the same man today that you were when you took office three-and-a-half years ago?

PRESIDENT JOE BIDEN: In terms of successes, yes. I also was the guy who put together a peace plan for the Middle East that may be comin' to fruition. I was also the guy that expanded NATO. I was also the guy that grew the economy. All the individual things that were done were ideas I had or I fulfilled...

STEPHANOPOULOS: But what has all that work over the last three-and-a-half years cost you physically, mentally, emotionally?PRESIDENT JOE BIDEN: Well, I-- I-- I just think it cost me a really bad night, bad run, but, you know, I-- George. I have-- I'm optimistic about this country. I don't think we're a country of losers that he points out.

A red herring is a fallacy in which the speaker introduces irrelevant information to divert attention from the original topic or question. The goal is often to avoid directly addressing a challenging or uncomfortable issue by shifting the focus to a different, less problematic topic.

In this exchange, Stephanopoulos asks Biden if he is the same man today as he was when he took office, specifically in terms of his physical, mental, and emotional state. Instead of directly addressing the question about his personal well-being and potential changes over his term, Biden pivots to discussing his successes as President, such as his Middle East peace plan, expanding NATO, and growing the economy.

While these accomplishments are relevant to his overall record as President, they do not directly address the specific question about his current state compared to when he took office. By shifting the focus to his successes, Biden avoids confronting the potential implications of the question, which is whether his age and the demands of the presidency have taken a toll on him personally.

Furthermore, when Stephanopoulos presses him on the personal cost of his work as President, Biden briefly acknowledges a "bad night" but quickly shifts the topic again to his optimism about the country and a criticism of his opponent. This further diverts attention from the original question about his personal well-being and capacity to serve.

2. straw man and nut-picking • Biden misrepresents or exaggerates statements made by Trump to argue against them, which can be seen as a way to simplify and attack the opposing position inaccurately.

This is a guy who told us to put bleach in our arms to deal with COVID, with a million-- over a million people died.

While Trump did mention disinfectant and the possibility of "injection inside," he did not explicitly tell people to "put bleach in our arms." Trump's comments were made during a press briefing where he was discussing potential treatments for COVID-19. He mentioned the effects of ultraviolet light and disinfectants on the virus and then speculated about the possibility of applying these methods inside the body. However, his statements were not a direct recommendation or instruction for people to inject themselves with bleach or any other disinfectant.

It's important to note that Trump's comments were still irresponsible and potentially dangerous, as they could have been misinterpreted by some people. Medical professionals quickly warned against the internal use of disinfectants, which can be highly toxic and life-threatening. While Biden's characterization of Trump's comments is an exaggeration and oversimplification, it does capture the essence of the controversy surrounding Trump's statements, which were ill-advised and could have led to harmful misinterpretations.

At the same time, Biden's specific characterization of Trump's comments could be considered a straw man fallacy or nut picking. A straw man fallacy involves misrepresenting an opponent's argument, often by exaggerating, oversimplifying, or taking it out of context, to make it easier to attack or refute. In this case, Biden misrepresents Trump's speculative comments about disinfectants and light as a direct instruction to inject bleach, which is an exaggerated and oversimplified version of what Trump actually said.

Nut picking is a related fallacy where an arguer cherry-picks the weakest, most extreme, or least representative example of an opponent's argument to attack, rather than addressing the strongest or most reasonable version of the argument. While Trump's comments were ill-advised and potentially dangerous, focusing solely on the "inject disinfectant" interpretation while ignoring the broader context of the discussion could be seen as a form of nut picking.

By using these fallacious techniques, Biden creates a more easily attackable version of Trump's statements, which can be an effective rhetorical strategy but does not represent a fair or accurate portrayal of the original comments.

3. equivocation • It appears that Biden is equivocating on the meaning of "neurological test" in this exchange.

STEPHANOPOULOS: I know you said you have an ongoing assessment. Have you had a full neurological and cognitive evaluation?

PRESIDENT JOE BIDEN: I've had-- I get a full neurological test everyday with me. And I've had a full physical. I had, you know, I mean, I-- I've been at Walter Reed for my physicals. I mean--uhm yes, the answer.

STEPHANOPOULOS: I-- I know your doctor said he consulted with a neurologist. I-- I guess I'm asking-- a slightly different question. Have you had the specific cognitive tests, and have you had a neurologist, a specialist, do an examination?

PRESIDENT JOE BIDEN: No. No one said I had to. No one said. They said I'm good.

STEPHANOPOULOS: Would you be willing to undergo an independent medical evaluation that included neurological and cognit-- cognitive tests and release the results to the American people?

PRESIDENT JOE BIDEN: Look. I have a cognitive test every single day. Every day I have that test. Everything I do. You know, not only am I campaigning, but I'm running the world... for example, today before I came out here, I'm on the phone with-- with the prime minister of-- well, anyway, I shouldn't get into detail..

STEPHANOPOULOS: And you have been doing that and the American people have been watching, yet their concerns about your age and your health are growing. So that's why I'm asking -- to reassure them, would you be willing to have the independent medical evaluation?

PRESIDENT JOE BIDEN: Watch me between-- there's a lotta time left in this campaign. There's over 125 days.

STEPHANOPOULOS: So the answer--

PRESIDENT JOE BIDEN: They'll make a decision.

STEPHANOPOULOS: Right-the answer right now is, no, you-- you don't want to do that right now.

PRESIDENT JOE BIDEN: Well, I've already done it.

Equivocation is a fallacy in which a word or phrase is used in multiple senses within an argument, leading to confusion or misleading conclusions. In this case, the term "neurological test" seems to be used in two different ways by Biden and Stephanopoulos. When Stephanopoulos asks if Biden has had a full neurological and cognitive evaluation, he seems to be referring to a specific, comprehensive examination conducted by a neurologist or specialist to assess Biden's cognitive abilities and neurological health.

However, in response, Biden claims that he gets a "full neurological test everyday," which he then equates to his daily activities and responsibilities as President, such as making phone calls with world leaders and campaigning. This suggests that Biden is using the term "neurological test" in a much broader, non-medical sense to refer to the mental demands of his job.

When pressed further by Stephanopoulos about undergoing an independent medical evaluation specifically focused on cognitive tests, Biden evades the question and continues to insist that his daily activities constitute cognitive tests. He then contradicts himself by saying he has already done the evaluation, despite having said "no" to the specific question about cognitive tests administered by a neurologist.

This equivocation allows Biden to avoid directly answering whether he has undergone or would be willing to undergo the type of comprehensive neurological and cognitive evaluation that Stephanopoulos is asking about, while still claiming that he is regularly "tested" in a different sense.