British Prime Minister H.H. Asquith approved the disastrous Gallipoli plan while being completely distracted. During the crucial War Council meeting, he was reading and writing love letters to his daughter's much younger friend, Venetia Stanley, abdicating his responsibility.

The Gallipoli campaign was conceived by Churchill as a brilliant "wheeze" to bypass the stalemate of trench warfare on the Western Front. The ultimate irony is that its failure led to the creation of a new front, where soldiers dug into trenches under even more hellish conditions.

Trump's current inner circle consists of advisors loyal to him personally, not the country. They filter information to praise him and won't challenge his ideas, leading to poorly-informed, dangerous decisions.

A person's strength in eloquent storytelling can become a weakness. The speaker admits he was so good at framing his argument for going fully remote that he convinced himself it was the right move, ignoring potential downsides and leading his company into a significant strategic error.

Churchill's initial Gallipoli plan relied exclusively on naval bombardment to force Constantinople's surrender, a fundamental strategic error. As even his allies noted, ships cannot occupy cities or hold ground. This flawed premise guaranteed the initial operation's failure and forced a bloody land invasion.

A leader's openness to outside advice is conditional. It is only at moments when they feel uncertain or don't know the way forward that they are truly receptive to new ideas. Leaders who have already fixed their views or are confident in their own judgment will often ignore even compelling counsel.

Churchill viewed the war as a "glorious, delicious" adventure. This personal excitement and desire for a grand "wheeze" led him to champion the ill-conceived Gallipoli plan, overriding cautious advisors and ignoring clear risks, ultimately leading to a catastrophe.

The entire British Gallipoli strategy was predicated on the racist assumption that Ottoman "Turk" soldiers were inferior and would quickly flee. This belief caused planners to ignore the enemy's battle-hardened status, defensive preparations, and strong motivation, with fatal consequences.

The brain's tendency to create stories simplifies complex information but creates a powerful confirmation bias. As illustrated by a military example where a friendly tribe was nearly bombed, leaders who get trapped in their narrative will only see evidence that confirms it, ignoring critical data to the contrary.