When faced with the absence of a can opener, how to open a can without a can opener. One method involves using a spoon as an improvised tool. Simply position the spoon's bowl edge against the can's rim and apply steady pressure while rotating the spoon. This technique gradually breaks the seal, allowing access to the contents.

Alternatively, rubbing the can's lid against a rough surface like concrete can wear down the edge, eventually creating an opening. Exercise caution to avoid injury during this process.

For those with a multi-tool or a pocket knife, using the blade to puncture and cut around the can's lid is an effective approach. Be mindful of safety and take it slow to prevent accidents.

While these methods might require patience and a bit of effort, they provide viable solutions for opening cans in the absence of a conventional can opener, showcasing resourcefulness in challenging situations.