Why did Douglas engelbart make the Computer mouse?

Douglas Engelbart invented the computer mouse to enhance human-computer interaction, making it easier and more intuitive. He aimed to develop tools that would improve productivity and facilitate collaborative work, which he believed was essential for addressing complex societal challenges. The mouse was part of his broader vision for augmenting human intelligence through technology, as demonstrated in his 1968 "Mother of All Demos." Engelbart's innovations laid the groundwork for modern computing interfaces.