Guns and Rockets (feat. Smarter Every Day) - Objectivity 80 

Got any aviation or industrial revolution things in there? Would love to see it!

Keith is the Wikipedia incarnate.

Much as the rocketry and ballistics stuff was fascinating... that dad dancing though

I think what is great about Brady and Destin and why their channels do so well is because they are not geniuses. Kieth is brilliant, but Brady and Destin ask questions and don't pretend to just understand things, so in trying to understand by asking questions and summarizing, it helps us understand. Good shit yall.

i don't know why but I like the moments when Destin just says "what's a carronade" and "what's a hadely"

This may very well be the best Objectivity video yet, because of how it goes more deeply into the matter discussed.

Keith and Destin - what a fantastic pairing.

My 2 favorite youtubers! Destin and Brady in the same video! And it's awesome!

It's really impressive how Destin is behaving. I am only studying natural science at a basic level, but one of the biggest challenges for me and my classmates is the fear of looking stupid and asking questions. Destin is so honestly interested, and when he doesn't understand he asks questions straight out. It is really an inspiration and so nice to see!

The way Destin's face lights up when he sees the book's title is absolutely priceless.

You can really see Destin's mind turning as Keith is showing him these items. So wonderful of you to bring Destin to the Royal Society Brady.

I think this is one of the best objectivity videos - Destin is not only super interested but completely understands what is being discussed in the texts which amplifies his passion. For me I think this is how I would want to research, discovering things that I understand but looking through documentation of someone who doesnt and is trying to discover for themselves and by doing so you are effectively looking at their train of thought and how they understand the concept at hand. And to top it all realising that this is not a modern day person learning through practice how to do these things but someone 3/400 years ago and most likely the very first person to have thought about these things, and comparing equipment used today is not dissimilar to equipment used then. I really liked this and I think it showed that Destin really liked this as well. I look forward to the white hands of Destin-y :P

I like to believe that Keith has omniscient knowledge of the world and uses these documents as a cover to hide his powers. Also, can't wait for the white gloves of Destin-y!

Keith's depth and breadth of knowledge still astounds me. I loved watching Destin as he learns something new and gets excited about it.

that wedding dance was awesome

This. Was. Interesting.

I don't remember ever hearing about Benjamin Robins before, this was extremely interesting. Thank you.

I hope Destin recreates the force gauges per the diagrams and tests them against current methods. It would be cool to look at how accurate they were.

Destin is a lovely guy, God bless him.

apart they don't trigger but keith and destin next to eachother makes one much more english gentleman and the other much more gemini astronaut.

This has to be one of the best ones yet. This is a video of two people completely geeking out.

Watching Destin and Keith together is awesome :-)

@4:40 It looks like they edited out Destin saying "Awesome."

keith lookin fresh

I love Keith's soft library voice and Destin's loud field voice being in the same room. This is a great episode.

4:00 I love how Destin falls back to 'science talk' when he has to think hard of something

Knowledge = power = energy = mass = Keith is a blackhole

brady right there at the end, he knows whats up. watched every smarter every day episode at least twice, but only seen like an eighth of the objectivity videos

The interest Destin shows, the care Keith and Brady put into delivering the goods. Everything in this video just warms my heart. Thank you guys.

*Happy smile* Two men who really want to make the world a better place.

I love your videos. This channel is the best little treasure trove on the internet.

you can see Destin can barely contain his curiosity and excitement, but that he is wary of touching the sensitive old documents. love it!

I love when the teachers of the internet become students for just a moment. Especially people like Destin, because he's so enthusiastic about his interests.

Brady, Keith and Destin. You all are awesome. Carry on with being great humans

2:09 Am I the only one who is amazed at the fact that keith just said the word ''Cool'' ?!?

Of all the guests... You get Destin and skip the opportunity for the white gloves of DESTINy. lol

I just loved seeing Destin geek out. Just another reason I'm drawn to the real emotional response for these creators. great work! subscribed. I'm catching up on old video now

Brady and Destin, this science education through internet video is a noble goal. But I think what would most benefit all of mankind is recording Keith saying Roll Tide in the halls of the Royal Society!! Seriously though, you guys are both at the top of your game and it's great to see you two collaborating. Thanks for what you do!

People aren't appreciating the top notch wedding dancing

It's amazing to see a guy as smart as Destin so humbled and curious.

Keith never lets you down now we want Grant Thompson and Colin furze and veritasium on objectivity

Brady is a legend, he contributed alot to maths and science youtube channels.

I am quite proud that the history of my little country provokes wonderment and enthusiasm in Destin. No coincidence that tattooed from shoulder to shoulder across my chest are the immortal words: nullius in verba.

the tie with skulls and heart is awesome.

I love how low-key super excited he is looking at this! And how quick he is to say "I don't know what _____ is." That's how you get smarter every day!!!

"You already watch Smarter Every Day, don't go watch another Smarter Every Day video, watch another Objectivity video, you've already seen all that guy's videos" xD

Man, I love Destin, but this is probably my favorite video he's ever been in. You can see the enthusiasm shine through the camera. And when he realizes the methods they used before, it's almost like you can touch his sense of awe for the people that figured this out way, way back. By far the best Objectivity video to date!

I don’t know who was having more fun in this episode, Destin or Keith. This seemed like a great time as much for both and it really came through. Great video.

I've seen this episode before, but upon a rewatch I'm just now noticing Keith's tie. What an awesome tie!

I was not prepared for that clip of epic proportions, and thus embarrassed that I should have known someone, who is as hard as a nail, would deign to grace us with such love and life.

I can imagine the conversation beforehand. "What are we going to show him?" "He's American. Show him gun stuff." :-) That was a terrific episode!!

That tie of Kieth's is absolutely lovely!) The colours (gold and purple if I recognised it correctly) are very noble and gala...

Brady and Destin making a video together! YESSS!

I love how curious and engaged Brady and Destin always look when Keith tells them about this stuff. You can easily see their love of learning.

Drag equations and wigs go well together.

I love the way Destin admits "I don't know what a carronade is". That's the true sign of intelligence.

I would happily watch the clip of you two dancing all day, the most i have smiled in weeks!

WOW! Speechless...if a laymen like me could spend one hour in there...speechless...that would be absolutely incredible! WOW!

Cool video. Keith's tie equally cool.

I love seeing Destin nerd out about this stuff!

Your smile is contagious, and seen how excited you are about science is cool

I love watching Destin learn

This surely is one of the most interesting episodes in part because the object isn't a piece of wood that someone famous from couple hundred years ago hold at one time, but just book and a really fascinating topic.

This is pretty much all i ever wanted.

Destin is a inspiration to me. He makes Science fun

Keith is the man... love this guy.

You had me at 0:12! Looks like you guys were having a regular dance-off. Grand stuff!!!

Subscriber of both channels, this is one of the best of both. Bravo, respect, and props.

the librarians voice is so soothing

Destin in London! Oh! this is cool. The dance part was the best!

I like that sound bite that's just Destin saying "Rockets"

that video of you guys dancing....hah cracked me the hell up

This is some of the best content I've seen on this channel.

Science! RU-vid channels like this are just such a gift. I love seeing how excited people get, seeing the gears turning when looking at this history. Also, Destin! haha. I subscribe to so many of these guys, all amazing people. Thanks for all you hard work guys!

This is one of the most interesting Objectivities yet. I suspect that Destin and I share a lot of interests.

I have no idea what anything they're saying means, but it feels great seeing intelligent people engage with their interests

My two favorite channels combined.... awesome

Destin has such a thirst for knowledge. You can read it on his face he's so excited and engaged.

Oh, that tie Kieth is wearing... Love it!

Finally, I have been waiting for this videos since I saw you guys togheter on Instagram. Awesome!

Two of my favorite youtubers combining. Love it. Here's to the longevity of all of your channels!

Wow, Destin and Keith! ⭐️⭐️⭐️⭐️⭐️

This is the best. You guys are awesome!

Awesome! Cannot wait for the White Gloves, that will be fantastic!

THIS WAS THE BEST EPISODE EVER

Does Keith just know everything about everything? I assumed he prereads this stuff before the videos get made, but whenever Destin or Brady have a specific question, Keith knows the exact answer right away.

DESTIN INTRO: "ROCKETS" *gunfire and banjos*

Loved this episode.

This video is awesome. Objectivity just keeps getting better!

Destin is literally nerding out.

Love this episode

This was awesome (and Keith's tie is so cool)

My god, Keith always amazes me, how can a man store all this information in his head?

3:00 THAT is how you get good at science. It doesn't matter if you're in front of your friends, your class or on camera. If you don't know something, you find out what it is. The shame is not in not knowing, but in choosing to stay ignorant.

Loved this so much!

love seeing this kinda of collaboration

Destin was so great in this. I liked how excited he was. :)

This was so good, I'm at a genuine loss for words. It's like, I wanna leave the best comment ever because this was one of the best Objectivity episodes yet and hey it's Destin from SmarterEveryDay and his channel is also super good... ... I'm so sorry. I'll drop by later to leave a proper comment.

You're right Brady. I HAVE watched all of Destins video's :D

You made me loudly gasp in the middle of the subway. Now people are looking at me. I hope you're happy.