A voluntary workshop with member Stephen Watson covered the technique of using string (or in this case elastic) to check the accuracy of both singe and double point perspective when laying out the composition of your artwork. Stephen also showed and demonstrated the 'rule of thirds' to help position and scale a regular series of diminishing objects such as fence posts or street lights.
Luckily, the String Theory workshop was nothing to do with 'Quantum Entanglement' or 'Quantum Flux Collapse Into Waveform Energy Upon Observation'.